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Finding the Fourth Proportional to 133,468.85, 184,387.01 and 87,637.20

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Solution

The fourth proportional to 133,468.85, 184,387.01 and 87,637.20 is: 121,070.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,468.85 : 184,387.01 = 87,637.20 : x
  2. Step 2: Convert to fraction form
    133,468.85/184,387.01 = 87,637.20/x
  3. Step 3: Cross multiply
    133,468.85x = 184,387.01 × 87,637.20
  4. Step 4: Simplify right side
    133,468.85x = 16,159,160,834.59
  5. Step 5: Solve for x
    x = 16,159,160,834.59/133,468.85
  6. Step 6: Final answer
    x = 121,070.66

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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.