Home / 145,428.20-218,142.30-94,689.80

Finding the Fourth Proportional to 145,428.20, 218,142.30 and 94,689.80

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Solution

The fourth proportional to 145,428.20, 218,142.30 and 94,689.80 is: 142,034.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,428.20 : 218,142.30 = 94,689.80 : x
  2. Step 2: Convert to fraction form
    145,428.20/218,142.30 = 94,689.80/x
  3. Step 3: Cross multiply
    145,428.20x = 218,142.30 × 94,689.80
  4. Step 4: Simplify right side
    145,428.20x = 20,655,850,758.54
  5. Step 5: Solve for x
    x = 20,655,850,758.54/145,428.20
  6. Step 6: Final answer
    x = 142,034.70

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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.