Home / 75,117.20-112,513.80-70,700.82

Finding the Fourth Proportional to 75,117.20, 112,513.80 and 70,700.82

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Solution

The fourth proportional to 75,117.20, 112,513.80 and 70,700.82 is: 105,898.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,117.20 : 112,513.80 = 70,700.82 : x
  2. Step 2: Convert to fraction form
    75,117.20/112,513.80 = 70,700.82/x
  3. Step 3: Cross multiply
    75,117.20x = 112,513.80 × 70,700.82
  4. Step 4: Simplify right side
    75,117.20x = 7,954,817,921.32
  5. Step 5: Solve for x
    x = 7,954,817,921.32/75,117.20
  6. Step 6: Final answer
    x = 105,898.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.