Home / 112,958.59-156,045.09-90,267.88

Finding the Fourth Proportional to 112,958.59, 156,045.09 and 90,267.88

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Solution

The fourth proportional to 112,958.59, 156,045.09 and 90,267.88 is: 124,699.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,958.59 : 156,045.09 = 90,267.88 : x
  2. Step 2: Convert to fraction form
    112,958.59/156,045.09 = 90,267.88/x
  3. Step 3: Cross multiply
    112,958.59x = 156,045.09 × 90,267.88
  4. Step 4: Simplify right side
    112,958.59x = 14,085,859,458.71
  5. Step 5: Solve for x
    x = 14,085,859,458.71/112,958.59
  6. Step 6: Final answer
    x = 124,699.32

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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.