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Finding the Fourth Proportional to 119,987.80, 179,981.70 and 96,659.80

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Solution

The fourth proportional to 119,987.80, 179,981.70 and 96,659.80 is: 144,989.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,987.80 : 179,981.70 = 96,659.80 : x
  2. Step 2: Convert to fraction form
    119,987.80/179,981.70 = 96,659.80/x
  3. Step 3: Cross multiply
    119,987.80x = 179,981.70 × 96,659.80
  4. Step 4: Simplify right side
    119,987.80x = 17,396,995,125.66
  5. Step 5: Solve for x
    x = 17,396,995,125.66/119,987.80
  6. Step 6: Final answer
    x = 144,989.70

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1.5x scale

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.