Home / 211,083,838.90-316,665,533.81-79,965,386.79

Finding the Fourth Proportional to 211,083,838.90, 316,665,533.81 and 79,965,386.79

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Solution

The fourth proportional to 211,083,838.90, 316,665,533.81 and 79,965,386.79 is: 119,963,148.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,083,838.90 : 316,665,533.81 = 79,965,386.79 : x
  2. Step 2: Convert to fraction form
    211,083,838.90/316,665,533.81 = 79,965,386.79/x
  3. Step 3: Cross multiply
    211,083,838.90x = 316,665,533.81 × 79,965,386.79
  4. Step 4: Simplify right side
    211,083,838.90x = 25,322,281,894,178,476
  5. Step 5: Solve for x
    x = 25,322,281,894,178,476/211,083,838.90
  6. Step 6: Final answer
    x = 119,963,148.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.