Home / 129,815.46-179,103.15-72,445.32

Finding the Fourth Proportional to 129,815.46, 179,103.15 and 72,445.32

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Solution

The fourth proportional to 129,815.46, 179,103.15 and 72,445.32 is: 99,951.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,815.46 : 179,103.15 = 72,445.32 : x
  2. Step 2: Convert to fraction form
    129,815.46/179,103.15 = 72,445.32/x
  3. Step 3: Cross multiply
    129,815.46x = 179,103.15 × 72,445.32
  4. Step 4: Simplify right side
    129,815.46x = 12,975,185,014.76
  5. Step 5: Solve for x
    x = 12,975,185,014.76/129,815.46
  6. Step 6: Final answer
    x = 99,951.00

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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.