Home / 139,686,941,717.39-192,803,845,943.88-90,979,137,650.24

Finding the Fourth Proportional to 139,686,941,717.39, 192,803,845,943.88 and 90,979,137,650.24

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Solution

The fourth proportional to 139,686,941,717.39, 192,803,845,943.88 and 90,979,137,650.24 is: 125,574,569,991.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,686,941,717.39 : 192,803,845,943.88 = 90,979,137,650.24 : x
  2. Step 2: Convert to fraction form
    139,686,941,717.39/192,803,845,943.88 = 90,979,137,650.24/x
  3. Step 3: Cross multiply
    139,686,941,717.39x = 192,803,845,943.88 × 90,979,137,650.24
  4. Step 4: Simplify right side
    139,686,941,717.39x = 17,541,127,639,623,926,808,576
  5. Step 5: Solve for x
    x = 17,541,127,639,623,926,808,576/139,686,941,717.39
  6. Step 6: Final answer
    x = 125,574,569,991.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.