Home / 142,389.57-196,315.02-91,309.44

Finding the Fourth Proportional to 142,389.57, 196,315.02 and 91,309.44

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Solution

The fourth proportional to 142,389.57, 196,315.02 and 91,309.44 is: 125,889.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,389.57 : 196,315.02 = 91,309.44 : x
  2. Step 2: Convert to fraction form
    142,389.57/196,315.02 = 91,309.44/x
  3. Step 3: Cross multiply
    142,389.57x = 196,315.02 × 91,309.44
  4. Step 4: Simplify right side
    142,389.57x = 17,925,414,539.79
  5. Step 5: Solve for x
    x = 17,925,414,539.79/142,389.57
  6. Step 6: Final answer
    x = 125,889.94

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1.5x scale

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.