Home / 99,729.19-138,208.53-97,836.76

Finding the Fourth Proportional to 99,729.19, 138,208.53 and 97,836.76

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Solution

The fourth proportional to 99,729.19, 138,208.53 and 97,836.76 is: 135,585.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,729.19 : 138,208.53 = 97,836.76 : x
  2. Step 2: Convert to fraction form
    99,729.19/138,208.53 = 97,836.76/x
  3. Step 3: Cross multiply
    99,729.19x = 138,208.53 × 97,836.76
  4. Step 4: Simplify right side
    99,729.19x = 13,521,874,779.56
  5. Step 5: Solve for x
    x = 13,521,874,779.56/99,729.19
  6. Step 6: Final answer
    x = 135,585.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.