Home / 124,030.81-171,179.90-89,687.08

Finding the Fourth Proportional to 124,030.81, 171,179.90 and 89,687.08

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Solution

The fourth proportional to 124,030.81, 171,179.90 and 89,687.08 is: 123,780.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,030.81 : 171,179.90 = 89,687.08 : x
  2. Step 2: Convert to fraction form
    124,030.81/171,179.90 = 89,687.08/x
  3. Step 3: Cross multiply
    124,030.81x = 171,179.90 × 89,687.08
  4. Step 4: Simplify right side
    124,030.81x = 15,352,625,385.69
  5. Step 5: Solve for x
    x = 15,352,625,385.69/124,030.81
  6. Step 6: Final answer
    x = 123,780.74

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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.