Home / 129,659.13-178,929.45-70,043.13

Finding the Fourth Proportional to 129,659.13, 178,929.45 and 70,043.13

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Solution

The fourth proportional to 129,659.13, 178,929.45 and 70,043.13 is: 96,659.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,659.13 : 178,929.45 = 70,043.13 : x
  2. Step 2: Convert to fraction form
    129,659.13/178,929.45 = 70,043.13/x
  3. Step 3: Cross multiply
    129,659.13x = 178,929.45 × 70,043.13
  4. Step 4: Simplify right side
    129,659.13x = 12,532,778,727.18
  5. Step 5: Solve for x
    x = 12,532,778,727.18/129,659.13
  6. Step 6: Final answer
    x = 96,659.44

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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.