Home / 129,839.15-179,259.08-99,566.21

Finding the Fourth Proportional to 129,839.15, 179,259.08 and 99,566.21

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Solution

The fourth proportional to 129,839.15, 179,259.08 and 99,566.21 is: 137,463.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,839.15 : 179,259.08 = 99,566.21 : x
  2. Step 2: Convert to fraction form
    129,839.15/179,259.08 = 99,566.21/x
  3. Step 3: Cross multiply
    129,839.15x = 179,259.08 × 99,566.21
  4. Step 4: Simplify right side
    129,839.15x = 17,848,147,154.00
  5. Step 5: Solve for x
    x = 17,848,147,154.00/129,839.15
  6. Step 6: Final answer
    x = 137,463.52

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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.