Home / 145,151.76-200,330.10-81,493.86

Finding the Fourth Proportional to 145,151.76, 200,330.10 and 81,493.86

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Solution

The fourth proportional to 145,151.76, 200,330.10 and 81,493.86 is: 112,473.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,151.76 : 200,330.10 = 81,493.86 : x
  2. Step 2: Convert to fraction form
    145,151.76/200,330.10 = 81,493.86/x
  3. Step 3: Cross multiply
    145,151.76x = 200,330.10 × 81,493.86
  4. Step 4: Simplify right side
    145,151.76x = 16,325,673,123.19
  5. Step 5: Solve for x
    x = 16,325,673,123.19/145,151.76
  6. Step 6: Final answer
    x = 112,473.13

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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.