Home / 136,876.08-188,870.22-76,439.04

Finding the Fourth Proportional to 136,876.08, 188,870.22 and 76,439.04

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Solution

The fourth proportional to 136,876.08, 188,870.22 and 76,439.04 is: 105,475.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,876.08 : 188,870.22 = 76,439.04 : x
  2. Step 2: Convert to fraction form
    136,876.08/188,870.22 = 76,439.04/x
  3. Step 3: Cross multiply
    136,876.08x = 188,870.22 × 76,439.04
  4. Step 4: Simplify right side
    136,876.08x = 14,437,058,301.39
  5. Step 5: Solve for x
    x = 14,437,058,301.39/136,876.08
  6. Step 6: Final answer
    x = 105,475.39

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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.