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Finding the Fourth Proportional to 99,295.80, 148,943.70 and 57,305.40

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Solution

The fourth proportional to 99,295.80, 148,943.70 and 57,305.40 is: 85,958.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,295.80 : 148,943.70 = 57,305.40 : x
  2. Step 2: Convert to fraction form
    99,295.80/148,943.70 = 57,305.40/x
  3. Step 3: Cross multiply
    99,295.80x = 148,943.70 × 57,305.40
  4. Step 4: Simplify right side
    99,295.80x = 8,535,278,305.98
  5. Step 5: Solve for x
    x = 8,535,278,305.98/99,295.80
  6. Step 6: Final answer
    x = 85,958.10

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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.