Home / 99,034.78-136,508.83-77,487.36

Finding the Fourth Proportional to 99,034.78, 136,508.83 and 77,487.36

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Solution

The fourth proportional to 99,034.78, 136,508.83 and 77,487.36 is: 106,808.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,034.78 : 136,508.83 = 77,487.36 : x
  2. Step 2: Convert to fraction form
    99,034.78/136,508.83 = 77,487.36/x
  3. Step 3: Cross multiply
    99,034.78x = 136,508.83 × 77,487.36
  4. Step 4: Simplify right side
    99,034.78x = 10,577,708,853.39
  5. Step 5: Solve for x
    x = 10,577,708,853.39/99,034.78
  6. Step 6: Final answer
    x = 106,808.02

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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.