Home / 147,932.40-204,130.80-87,505.20

Finding the Fourth Proportional to 147,932.40, 204,130.80 and 87,505.20

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Solution

The fourth proportional to 147,932.40, 204,130.80 and 87,505.20 is: 120,747.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,932.40 : 204,130.80 = 87,505.20 : x
  2. Step 2: Convert to fraction form
    147,932.40/204,130.80 = 87,505.20/x
  3. Step 3: Cross multiply
    147,932.40x = 204,130.80 × 87,505.20
  4. Step 4: Simplify right side
    147,932.40x = 17,862,506,480.16
  5. Step 5: Solve for x
    x = 17,862,506,480.16/147,932.40
  6. Step 6: Final answer
    x = 120,747.76

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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.