Home / 145,401.20-218,101.08-38,784.92

Finding the Fourth Proportional to 145,401.20, 218,101.08 and 38,784.92

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Solution

The fourth proportional to 145,401.20, 218,101.08 and 38,784.92 is: 58,177.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,401.20 : 218,101.08 = 38,784.92 : x
  2. Step 2: Convert to fraction form
    145,401.20/218,101.08 = 38,784.92/x
  3. Step 3: Cross multiply
    145,401.20x = 218,101.08 × 38,784.92
  4. Step 4: Simplify right side
    145,401.20x = 8,459,032,939.71
  5. Step 5: Solve for x
    x = 8,459,032,939.71/145,401.20
  6. Step 6: Final answer
    x = 58,177.19

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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.