Home / 149,637.12-206,355.12-100,689.04

Finding the Fourth Proportional to 149,637.12, 206,355.12 and 100,689.04

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Solution

The fourth proportional to 149,637.12, 206,355.12 and 100,689.04 is: 138,853.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,637.12 : 206,355.12 = 100,689.04 : x
  2. Step 2: Convert to fraction form
    149,637.12/206,355.12 = 100,689.04/x
  3. Step 3: Cross multiply
    149,637.12x = 206,355.12 × 100,689.04
  4. Step 4: Simplify right side
    149,637.12x = 20,777,698,931.88
  5. Step 5: Solve for x
    x = 20,777,698,931.88/149,637.12
  6. Step 6: Final answer
    x = 138,853.91

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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.