Home / 130,004.80-194,618.40-77,387.20

Finding the Fourth Proportional to 130,004.80, 194,618.40 and 77,387.20

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Solution

The fourth proportional to 130,004.80, 194,618.40 and 77,387.20 is: 115,849.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,004.80 : 194,618.40 = 77,387.20 : x
  2. Step 2: Convert to fraction form
    130,004.80/194,618.40 = 77,387.20/x
  3. Step 3: Cross multiply
    130,004.80x = 194,618.40 × 77,387.20
  4. Step 4: Simplify right side
    130,004.80x = 15,060,973,044.48
  5. Step 5: Solve for x
    x = 15,060,973,044.48/130,004.80
  6. Step 6: Final answer
    x = 115,849.36

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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.