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Finding the Fourth Proportional to 145,160.71, 217,685.08 and 56,402.53

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Solution

The fourth proportional to 145,160.71, 217,685.08 and 56,402.53 is: 84,582.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,160.71 : 217,685.08 = 56,402.53 : x
  2. Step 2: Convert to fraction form
    145,160.71/217,685.08 = 56,402.53/x
  3. Step 3: Cross multiply
    145,160.71x = 217,685.08 × 56,402.53
  4. Step 4: Simplify right side
    145,160.71x = 12,277,989,255.25
  5. Step 5: Solve for x
    x = 12,277,989,255.25/145,160.71
  6. Step 6: Final answer
    x = 84,582.04

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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.