Home / 157,442.15-235,999.20-86,255.30

Finding the Fourth Proportional to 157,442.15, 235,999.20 and 86,255.30

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Solution

The fourth proportional to 157,442.15, 235,999.20 and 86,255.30 is: 129,293.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,442.15 : 235,999.20 = 86,255.30 : x
  2. Step 2: Convert to fraction form
    157,442.15/235,999.20 = 86,255.30/x
  3. Step 3: Cross multiply
    157,442.15x = 235,999.20 × 86,255.30
  4. Step 4: Simplify right side
    157,442.15x = 20,356,181,795.76
  5. Step 5: Solve for x
    x = 20,356,181,795.76/157,442.15
  6. Step 6: Final answer
    x = 129,293.09

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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.