Home / 100,026.20-138,053.13-57,609.29

Finding the Fourth Proportional to 100,026.20, 138,053.13 and 57,609.29

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Solution

The fourth proportional to 100,026.20, 138,053.13 and 57,609.29 is: 79,510.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,026.20 : 138,053.13 = 57,609.29 : x
  2. Step 2: Convert to fraction form
    100,026.20/138,053.13 = 57,609.29/x
  3. Step 3: Cross multiply
    100,026.20x = 138,053.13 × 57,609.29
  4. Step 4: Simplify right side
    100,026.20x = 7,953,142,801.58
  5. Step 5: Solve for x
    x = 7,953,142,801.58/100,026.20
  6. Step 6: Final answer
    x = 79,510.60

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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.