Home / 185,330.28-277,988.88-78,645.72

Finding the Fourth Proportional to 185,330.28, 277,988.88 and 78,645.72

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Solution

The fourth proportional to 185,330.28, 277,988.88 and 78,645.72 is: 117,965.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,330.28 : 277,988.88 = 78,645.72 : x
  2. Step 2: Convert to fraction form
    185,330.28/277,988.88 = 78,645.72/x
  3. Step 3: Cross multiply
    185,330.28x = 277,988.88 × 78,645.72
  4. Step 4: Simplify right side
    185,330.28x = 21,862,635,619.59
  5. Step 5: Solve for x
    x = 21,862,635,619.59/185,330.28
  6. Step 6: Final answer
    x = 117,965.80

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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.