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Finding the Fourth Proportional to 101,437.92, 139,968 and 63,763.20

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Solution

The fourth proportional to 101,437.92, 139,968 and 63,763.20 is: 87,982.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,437.92 : 139,968 = 63,763.20 : x
  2. Step 2: Convert to fraction form
    101,437.92/139,968 = 63,763.20/x
  3. Step 3: Cross multiply
    101,437.92x = 139,968 × 63,763.20
  4. Step 4: Simplify right side
    101,437.92x = 8,924,807,577.60
  5. Step 5: Solve for x
    x = 8,924,807,577.60/101,437.92
  6. Step 6: Final answer
    x = 87,982.95

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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.