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Finding the Fourth Proportional to 101,340.87, 139,831.16 and 63,598.11

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Solution

The fourth proportional to 101,340.87, 139,831.16 and 63,598.11 is: 87,753.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,340.87 : 139,831.16 = 63,598.11 : x
  2. Step 2: Convert to fraction form
    101,340.87/139,831.16 = 63,598.11/x
  3. Step 3: Cross multiply
    101,340.87x = 139,831.16 × 63,598.11
  4. Step 4: Simplify right side
    101,340.87x = 8,892,997,177.12
  5. Step 5: Solve for x
    x = 8,892,997,177.12/101,340.87
  6. Step 6: Final answer
    x = 87,753.31

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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.