Home / 149,830.72-206,716.80-98,868.76

Finding the Fourth Proportional to 149,830.72, 206,716.80 and 98,868.76

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Solution

The fourth proportional to 149,830.72, 206,716.80 and 98,868.76 is: 136,406.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,830.72 : 206,716.80 = 98,868.76 : x
  2. Step 2: Convert to fraction form
    149,830.72/206,716.80 = 98,868.76/x
  3. Step 3: Cross multiply
    149,830.72x = 206,716.80 × 98,868.76
  4. Step 4: Simplify right side
    149,830.72x = 20,437,833,687.17
  5. Step 5: Solve for x
    x = 20,437,833,687.17/149,830.72
  6. Step 6: Final answer
    x = 136,406.16

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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.