Home / 100,026.20-138,053.14-57,609.30

Finding the Fourth Proportional to 100,026.20, 138,053.14 and 57,609.30

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Solution

The fourth proportional to 100,026.20, 138,053.14 and 57,609.30 is: 79,510.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,026.20 : 138,053.14 = 57,609.30 : x
  2. Step 2: Convert to fraction form
    100,026.20/138,053.14 = 57,609.30/x
  3. Step 3: Cross multiply
    100,026.20x = 138,053.14 × 57,609.30
  4. Step 4: Simplify right side
    100,026.20x = 7,953,144,758.20
  5. Step 5: Solve for x
    x = 7,953,144,758.20/100,026.20
  6. Step 6: Final answer
    x = 79,510.62

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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.