Home / 100,050.31-137,934.32-64,178.04

Finding the Fourth Proportional to 100,050.31, 137,934.32 and 64,178.04

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Solution

The fourth proportional to 100,050.31, 137,934.32 and 64,178.04 is: 88,479.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,050.31 : 137,934.32 = 64,178.04 : x
  2. Step 2: Convert to fraction form
    100,050.31/137,934.32 = 64,178.04/x
  3. Step 3: Cross multiply
    100,050.31x = 137,934.32 × 64,178.04
  4. Step 4: Simplify right side
    100,050.31x = 8,852,354,306.33
  5. Step 5: Solve for x
    x = 8,852,354,306.33/100,050.31
  6. Step 6: Final answer
    x = 88,479.03

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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.