Home / 137,143.24-189,275.20-76,717.24

Finding the Fourth Proportional to 137,143.24, 189,275.20 and 76,717.24

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Solution

The fourth proportional to 137,143.24, 189,275.20 and 76,717.24 is: 105,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,143.24 : 189,275.20 = 76,717.24 : x
  2. Step 2: Convert to fraction form
    137,143.24/189,275.20 = 76,717.24/x
  3. Step 3: Cross multiply
    137,143.24x = 189,275.20 × 76,717.24
  4. Step 4: Simplify right side
    137,143.24x = 14,520,670,944.45
  5. Step 5: Solve for x
    x = 14,520,670,944.45/137,143.24
  6. Step 6: Final answer
    x = 105,879.60

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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.