Home / 122,609.60-169,141.21-74,779.91

Finding the Fourth Proportional to 122,609.60, 169,141.21 and 74,779.91

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Solution

The fourth proportional to 122,609.60, 169,141.21 and 74,779.91 is: 103,159.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,609.60 : 169,141.21 = 74,779.91 : x
  2. Step 2: Convert to fraction form
    122,609.60/169,141.21 = 74,779.91/x
  3. Step 3: Cross multiply
    122,609.60x = 169,141.21 × 74,779.91
  4. Step 4: Simplify right side
    122,609.60x = 12,648,364,483.35
  5. Step 5: Solve for x
    x = 12,648,364,483.35/122,609.60
  6. Step 6: Final answer
    x = 103,159.66

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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.