Home / 145,612.10-218,126.55-83,209.70

Finding the Fourth Proportional to 145,612.10, 218,126.55 and 83,209.70

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Solution

The fourth proportional to 145,612.10, 218,126.55 and 83,209.70 is: 124,647.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,612.10 : 218,126.55 = 83,209.70 : x
  2. Step 2: Convert to fraction form
    145,612.10/218,126.55 = 83,209.70/x
  3. Step 3: Cross multiply
    145,612.10x = 218,126.55 × 83,209.70
  4. Step 4: Simplify right side
    145,612.10x = 18,150,244,787.54
  5. Step 5: Solve for x
    x = 18,150,244,787.54/145,612.10
  6. Step 6: Final answer
    x = 124,647.92

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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.