Home / 129,488.84-178,697.94-72,902.24

Finding the Fourth Proportional to 129,488.84, 178,697.94 and 72,902.24

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Solution

The fourth proportional to 129,488.84, 178,697.94 and 72,902.24 is: 100,606.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,488.84 : 178,697.94 = 72,902.24 : x
  2. Step 2: Convert to fraction form
    129,488.84/178,697.94 = 72,902.24/x
  3. Step 3: Cross multiply
    129,488.84x = 178,697.94 × 72,902.24
  4. Step 4: Simplify right side
    129,488.84x = 13,027,480,109.39
  5. Step 5: Solve for x
    x = 13,027,480,109.39/129,488.84
  6. Step 6: Final answer
    x = 100,606.97

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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.