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Finding the Fourth Proportional to 157,280.80, 235,402.80 and 122,029.60

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Solution

The fourth proportional to 157,280.80, 235,402.80 and 122,029.60 is: 182,642.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,280.80 : 235,402.80 = 122,029.60 : x
  2. Step 2: Convert to fraction form
    157,280.80/235,402.80 = 122,029.60/x
  3. Step 3: Cross multiply
    157,280.80x = 235,402.80 × 122,029.60
  4. Step 4: Simplify right side
    157,280.80x = 28,726,109,522.88
  5. Step 5: Solve for x
    x = 28,726,109,522.88/157,280.80
  6. Step 6: Final answer
    x = 182,642.19

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1.5x scale

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.