Home / 99,236.10-149,045.63-85,036.78

Finding the Fourth Proportional to 99,236.10, 149,045.63 and 85,036.78

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Solution

The fourth proportional to 99,236.10, 149,045.63 and 85,036.78 is: 127,719.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,236.10 : 149,045.63 = 85,036.78 : x
  2. Step 2: Convert to fraction form
    99,236.10/149,045.63 = 85,036.78/x
  3. Step 3: Cross multiply
    99,236.10x = 149,045.63 × 85,036.78
  4. Step 4: Simplify right side
    99,236.10x = 12,674,360,288.25
  5. Step 5: Solve for x
    x = 12,674,360,288.25/99,236.10
  6. Step 6: Final answer
    x = 127,719.25

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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.