Home / 143,856.60-215,784.90-38,686.20

Finding the Fourth Proportional to 143,856.60, 215,784.90 and 38,686.20

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Solution

The fourth proportional to 143,856.60, 215,784.90 and 38,686.20 is: 58,029.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,856.60 : 215,784.90 = 38,686.20 : x
  2. Step 2: Convert to fraction form
    143,856.60/215,784.90 = 38,686.20/x
  3. Step 3: Cross multiply
    143,856.60x = 215,784.90 × 38,686.20
  4. Step 4: Simplify right side
    143,856.60x = 8,347,897,798.38
  5. Step 5: Solve for x
    x = 8,347,897,798.38/143,856.60
  6. Step 6: Final answer
    x = 58,029.30

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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.