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Finding the Fourth Proportional to 130,001.80, 194,613.90 and 77,384.20

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Solution

The fourth proportional to 130,001.80, 194,613.90 and 77,384.20 is: 115,844.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,001.80 : 194,613.90 = 77,384.20 : x
  2. Step 2: Convert to fraction form
    130,001.80/194,613.90 = 77,384.20/x
  3. Step 3: Cross multiply
    130,001.80x = 194,613.90 × 77,384.20
  4. Step 4: Simplify right side
    130,001.80x = 15,060,040,960.38
  5. Step 5: Solve for x
    x = 15,060,040,960.38/130,001.80
  6. Step 6: Final answer
    x = 115,844.86

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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.