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Finding the Fourth Proportional to 145,155.80, 217,733.72 and 45,324.55

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Solution

The fourth proportional to 145,155.80, 217,733.72 and 45,324.55 is: 67,986.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,155.80 : 217,733.72 = 45,324.55 : x
  2. Step 2: Convert to fraction form
    145,155.80/217,733.72 = 45,324.55/x
  3. Step 3: Cross multiply
    145,155.80x = 217,733.72 × 45,324.55
  4. Step 4: Simplify right side
    145,155.80x = 9,868,681,563.53
  5. Step 5: Solve for x
    x = 9,868,681,563.53/145,155.80
  6. Step 6: Final answer
    x = 67,986.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.