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Finding the Fourth Proportional to 113,550.84, 156,831.48 and 77,677.92

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Solution

The fourth proportional to 113,550.84, 156,831.48 and 77,677.92 is: 107,285.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,550.84 : 156,831.48 = 77,677.92 : x
  2. Step 2: Convert to fraction form
    113,550.84/156,831.48 = 77,677.92/x
  3. Step 3: Cross multiply
    113,550.84x = 156,831.48 × 77,677.92
  4. Step 4: Simplify right side
    113,550.84x = 12,182,343,156.92
  5. Step 5: Solve for x
    x = 12,182,343,156.92/113,550.84
  6. Step 6: Final answer
    x = 107,285.36

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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.