Home / 99,534.30-149,301.45-91,931.10

Finding the Fourth Proportional to 99,534.30, 149,301.45 and 91,931.10

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Solution

The fourth proportional to 99,534.30, 149,301.45 and 91,931.10 is: 137,896.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,534.30 : 149,301.45 = 91,931.10 : x
  2. Step 2: Convert to fraction form
    99,534.30/149,301.45 = 91,931.10/x
  3. Step 3: Cross multiply
    99,534.30x = 149,301.45 × 91,931.10
  4. Step 4: Simplify right side
    99,534.30x = 13,725,446,530.10
  5. Step 5: Solve for x
    x = 13,725,446,530.10/99,534.30
  6. Step 6: Final answer
    x = 137,896.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.