Home / 112,809.28-155,677.88-61,826.72

Finding the Fourth Proportional to 112,809.28, 155,677.88 and 61,826.72

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Solution

The fourth proportional to 112,809.28, 155,677.88 and 61,826.72 is: 85,321.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,809.28 : 155,677.88 = 61,826.72 : x
  2. Step 2: Convert to fraction form
    112,809.28/155,677.88 = 61,826.72/x
  3. Step 3: Cross multiply
    112,809.28x = 155,677.88 × 61,826.72
  4. Step 4: Simplify right side
    112,809.28x = 9,625,051,609.43
  5. Step 5: Solve for x
    x = 9,625,051,609.43/112,809.28
  6. Step 6: Final answer
    x = 85,321.46

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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.