Home / 131,421.87-181,442.52-85,525.23

Finding the Fourth Proportional to 131,421.87, 181,442.52 and 85,525.23

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Solution

The fourth proportional to 131,421.87, 181,442.52 and 85,525.23 is: 118,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,421.87 : 181,442.52 = 85,525.23 : x
  2. Step 2: Convert to fraction form
    131,421.87/181,442.52 = 85,525.23/x
  3. Step 3: Cross multiply
    131,421.87x = 181,442.52 × 85,525.23
  4. Step 4: Simplify right side
    131,421.87x = 15,517,913,254.78
  5. Step 5: Solve for x
    x = 15,517,913,254.78/131,421.87
  6. Step 6: Final answer
    x = 118,077.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.