Home / 99,149.28-136,822.32-56,706.72

Finding the Fourth Proportional to 99,149.28, 136,822.32 and 56,706.72

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Solution

The fourth proportional to 99,149.28, 136,822.32 and 56,706.72 is: 78,253.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,149.28 : 136,822.32 = 56,706.72 : x
  2. Step 2: Convert to fraction form
    99,149.28/136,822.32 = 56,706.72/x
  3. Step 3: Cross multiply
    99,149.28x = 136,822.32 × 56,706.72
  4. Step 4: Simplify right side
    99,149.28x = 7,758,744,989.99
  5. Step 5: Solve for x
    x = 7,758,744,989.99/99,149.28
  6. Step 6: Final answer
    x = 78,253.17

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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.