Home / 124,388.10-171,655.83-81,397.08

Finding the Fourth Proportional to 124,388.10, 171,655.83 and 81,397.08

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Solution

The fourth proportional to 124,388.10, 171,655.83 and 81,397.08 is: 112,328.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,388.10 : 171,655.83 = 81,397.08 : x
  2. Step 2: Convert to fraction form
    124,388.10/171,655.83 = 81,397.08/x
  3. Step 3: Cross multiply
    124,388.10x = 171,655.83 × 81,397.08
  4. Step 4: Simplify right side
    124,388.10x = 13,972,283,326.98
  5. Step 5: Solve for x
    x = 13,972,283,326.98/124,388.10
  6. Step 6: Final answer
    x = 112,328.14

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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.