Home / 129,929.42-179,290.92-72,560.77

Finding the Fourth Proportional to 129,929.42, 179,290.92 and 72,560.77

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Solution

The fourth proportional to 129,929.42, 179,290.92 and 72,560.77 is: 100,127.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,929.42 : 179,290.92 = 72,560.77 : x
  2. Step 2: Convert to fraction form
    129,929.42/179,290.92 = 72,560.77/x
  3. Step 3: Cross multiply
    129,929.42x = 179,290.92 × 72,560.77
  4. Step 4: Simplify right side
    129,929.42x = 13,009,487,209.21
  5. Step 5: Solve for x
    x = 13,009,487,209.21/129,929.42
  6. Step 6: Final answer
    x = 100,127.34

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1.5x scale

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.