Home / 109,008.87-163,326.45-86,588.70

Finding the Fourth Proportional to 109,008.87, 163,326.45 and 86,588.70

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Solution

The fourth proportional to 109,008.87, 163,326.45 and 86,588.70 is: 129,734.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,008.87 : 163,326.45 = 86,588.70 : x
  2. Step 2: Convert to fraction form
    109,008.87/163,326.45 = 86,588.70/x
  3. Step 3: Cross multiply
    109,008.87x = 163,326.45 × 86,588.70
  4. Step 4: Simplify right side
    109,008.87x = 14,142,224,572.80
  5. Step 5: Solve for x
    x = 14,142,224,572.80/109,008.87
  6. Step 6: Final answer
    x = 129,734.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.