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Finding the Fourth Proportional to 116,354.61, 160,642.85 and 80,531.55

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Solution

The fourth proportional to 116,354.61, 160,642.85 and 80,531.55 is: 111,184.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,354.61 : 160,642.85 = 80,531.55 : x
  2. Step 2: Convert to fraction form
    116,354.61/160,642.85 = 80,531.55/x
  3. Step 3: Cross multiply
    116,354.61x = 160,642.85 × 80,531.55
  4. Step 4: Simplify right side
    116,354.61x = 12,936,817,304.26
  5. Step 5: Solve for x
    x = 12,936,817,304.26/116,354.61
  6. Step 6: Final answer
    x = 111,184.40

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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.