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Finding the Fourth Proportional to 134,280, 185,306.88 and 73,854.40

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Solution

The fourth proportional to 134,280, 185,306.88 and 73,854.40 is: 101,919.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,280 : 185,306.88 = 73,854.40 : x
  2. Step 2: Convert to fraction form
    134,280/185,306.88 = 73,854.40/x
  3. Step 3: Cross multiply
    134,280x = 185,306.88 × 73,854.40
  4. Step 4: Simplify right side
    134,280x = 13,685,728,438.27
  5. Step 5: Solve for x
    x = 13,685,728,438.27/134,280
  6. Step 6: Final answer
    x = 101,919.34

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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.