Home / 137,124.12-189,231.72-76,695.80

Finding the Fourth Proportional to 137,124.12, 189,231.72 and 76,695.80

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Solution

The fourth proportional to 137,124.12, 189,231.72 and 76,695.80 is: 105,840.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,124.12 : 189,231.72 = 76,695.80 : x
  2. Step 2: Convert to fraction form
    137,124.12/189,231.72 = 76,695.80/x
  3. Step 3: Cross multiply
    137,124.12x = 189,231.72 × 76,695.80
  4. Step 4: Simplify right side
    137,124.12x = 14,513,278,150.78
  5. Step 5: Solve for x
    x = 14,513,278,150.78/137,124.12
  6. Step 6: Final answer
    x = 105,840.45

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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.