Home / 292,001.45-438,002.57-81,639.18

Finding the Fourth Proportional to 292,001.45, 438,002.57 and 81,639.18

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Solution

The fourth proportional to 292,001.45, 438,002.57 and 81,639.18 is: 122,458.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,001.45 : 438,002.57 = 81,639.18 : x
  2. Step 2: Convert to fraction form
    292,001.45/438,002.57 = 81,639.18/x
  3. Step 3: Cross multiply
    292,001.45x = 438,002.57 × 81,639.18
  4. Step 4: Simplify right side
    292,001.45x = 35,758,170,856.79
  5. Step 5: Solve for x
    x = 35,758,170,856.79/292,001.45
  6. Step 6: Final answer
    x = 122,458.88

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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.