Home / 115,489.60-159,371.15-72,492.19

Finding the Fourth Proportional to 115,489.60, 159,371.15 and 72,492.19

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Solution

The fourth proportional to 115,489.60, 159,371.15 and 72,492.19 is: 100,036.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,489.60 : 159,371.15 = 72,492.19 : x
  2. Step 2: Convert to fraction form
    115,489.60/159,371.15 = 72,492.19/x
  3. Step 3: Cross multiply
    115,489.60x = 159,371.15 × 72,492.19
  4. Step 4: Simplify right side
    115,489.60x = 11,553,162,925.43
  5. Step 5: Solve for x
    x = 11,553,162,925.43/115,489.60
  6. Step 6: Final answer
    x = 100,036.39

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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.