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Finding the Fourth Proportional to 157,255.80, 235,422.90 and 138,823.80

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Solution

The fourth proportional to 157,255.80, 235,422.90 and 138,823.80 is: 207,828.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,255.80 : 235,422.90 = 138,823.80 : x
  2. Step 2: Convert to fraction form
    157,255.80/235,422.90 = 138,823.80/x
  3. Step 3: Cross multiply
    157,255.80x = 235,422.90 × 138,823.80
  4. Step 4: Simplify right side
    157,255.80x = 32,682,301,585.02
  5. Step 5: Solve for x
    x = 32,682,301,585.02/157,255.80
  6. Step 6: Final answer
    x = 207,828.91

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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.