Home / 122,642.15-169,136.96-79,580.52

Finding the Fourth Proportional to 122,642.15, 169,136.96 and 79,580.52

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Solution

The fourth proportional to 122,642.15, 169,136.96 and 79,580.52 is: 109,750.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,642.15 : 169,136.96 = 79,580.52 : x
  2. Step 2: Convert to fraction form
    122,642.15/169,136.96 = 79,580.52/x
  3. Step 3: Cross multiply
    122,642.15x = 169,136.96 × 79,580.52
  4. Step 4: Simplify right side
    122,642.15x = 13,460,006,830.12
  5. Step 5: Solve for x
    x = 13,460,006,830.12/122,642.15
  6. Step 6: Final answer
    x = 109,750.26

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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.