Home / 112,743.12-155,639.16-70,363.92

Finding the Fourth Proportional to 112,743.12, 155,639.16 and 70,363.92

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Solution

The fourth proportional to 112,743.12, 155,639.16 and 70,363.92 is: 97,135.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,743.12 : 155,639.16 = 70,363.92 : x
  2. Step 2: Convert to fraction form
    112,743.12/155,639.16 = 70,363.92/x
  3. Step 3: Cross multiply
    112,743.12x = 155,639.16 × 70,363.92
  4. Step 4: Simplify right side
    112,743.12x = 10,951,381,403.11
  5. Step 5: Solve for x
    x = 10,951,381,403.11/112,743.12
  6. Step 6: Final answer
    x = 97,135.70

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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.