Home / 142,514.20-213,540.90-89,829.40

Finding the Fourth Proportional to 142,514.20, 213,540.90 and 89,829.40

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Solution

The fourth proportional to 142,514.20, 213,540.90 and 89,829.40 is: 134,598.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,514.20 : 213,540.90 = 89,829.40 : x
  2. Step 2: Convert to fraction form
    142,514.20/213,540.90 = 89,829.40/x
  3. Step 3: Cross multiply
    142,514.20x = 213,540.90 × 89,829.40
  4. Step 4: Simplify right side
    142,514.20x = 19,182,250,922.46
  5. Step 5: Solve for x
    x = 19,182,250,922.46/142,514.20
  6. Step 6: Final answer
    x = 134,598.87

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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.