Home / 112,701.32-169,134.75-90,779.38

Finding the Fourth Proportional to 112,701.32, 169,134.75 and 90,779.38

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Solution

The fourth proportional to 112,701.32, 169,134.75 and 90,779.38 is: 136,235.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,701.32 : 169,134.75 = 90,779.38 : x
  2. Step 2: Convert to fraction form
    112,701.32/169,134.75 = 90,779.38/x
  3. Step 3: Cross multiply
    112,701.32x = 169,134.75 × 90,779.38
  4. Step 4: Simplify right side
    112,701.32x = 15,353,948,270.00
  5. Step 5: Solve for x
    x = 15,353,948,270.00/112,701.32
  6. Step 6: Final answer
    x = 136,235.74

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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.