Home / 87,020.13-120,026.34-74,066.31

Finding the Fourth Proportional to 87,020.13, 120,026.34 and 74,066.31

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Solution

The fourth proportional to 87,020.13, 120,026.34 and 74,066.31 is: 102,159.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,020.13 : 120,026.34 = 74,066.31 : x
  2. Step 2: Convert to fraction form
    87,020.13/120,026.34 = 74,066.31/x
  3. Step 3: Cross multiply
    87,020.13x = 120,026.34 × 74,066.31
  4. Step 4: Simplify right side
    87,020.13x = 8,889,908,106.61
  5. Step 5: Solve for x
    x = 8,889,908,106.61/87,020.13
  6. Step 6: Final answer
    x = 102,159.21

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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.