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Finding the Fourth Proportional to 113,788.50, 157,028.13 and 63,487.50

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Solution

The fourth proportional to 113,788.50, 157,028.13 and 63,487.50 is: 87,612.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,788.50 : 157,028.13 = 63,487.50 : x
  2. Step 2: Convert to fraction form
    113,788.50/157,028.13 = 63,487.50/x
  3. Step 3: Cross multiply
    113,788.50x = 157,028.13 × 63,487.50
  4. Step 4: Simplify right side
    113,788.50x = 9,969,323,403.38
  5. Step 5: Solve for x
    x = 9,969,323,403.38/113,788.50
  6. Step 6: Final answer
    x = 87,612.75

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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.