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Finding the Fourth Proportional to 145,168.69, 217,642.29 and 66,227.71

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Solution

The fourth proportional to 145,168.69, 217,642.29 and 66,227.71 is: 99,291.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,168.69 : 217,642.29 = 66,227.71 : x
  2. Step 2: Convert to fraction form
    145,168.69/217,642.29 = 66,227.71/x
  3. Step 3: Cross multiply
    145,168.69x = 217,642.29 × 66,227.71
  4. Step 4: Simplify right side
    145,168.69x = 14,413,950,465.86
  5. Step 5: Solve for x
    x = 14,413,950,465.86/145,168.69
  6. Step 6: Final answer
    x = 99,291.04

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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.