Home / 136,107.71-187,801.02-79,508.15

Finding the Fourth Proportional to 136,107.71, 187,801.02 and 79,508.15

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Solution

The fourth proportional to 136,107.71, 187,801.02 and 79,508.15 is: 109,705.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,107.71 : 187,801.02 = 79,508.15 : x
  2. Step 2: Convert to fraction form
    136,107.71/187,801.02 = 79,508.15/x
  3. Step 3: Cross multiply
    136,107.71x = 187,801.02 × 79,508.15
  4. Step 4: Simplify right side
    136,107.71x = 14,931,711,668.31
  5. Step 5: Solve for x
    x = 14,931,711,668.31/136,107.71
  6. Step 6: Final answer
    x = 109,705.11

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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.