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Finding the Fourth Proportional to 145,153.76, 200,332.86 and 81,495.86

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Solution

The fourth proportional to 145,153.76, 200,332.86 and 81,495.86 is: 112,475.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,153.76 : 200,332.86 = 81,495.86 : x
  2. Step 2: Convert to fraction form
    145,153.76/200,332.86 = 81,495.86/x
  3. Step 3: Cross multiply
    145,153.76x = 200,332.86 × 81,495.86
  4. Step 4: Simplify right side
    145,153.76x = 16,326,298,711.96
  5. Step 5: Solve for x
    x = 16,326,298,711.96/145,153.76
  6. Step 6: Final answer
    x = 112,475.89

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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.