Home / 112,645.90-155,449.02-61,657.39

Finding the Fourth Proportional to 112,645.90, 155,449.02 and 61,657.39

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Solution

The fourth proportional to 112,645.90, 155,449.02 and 61,657.39 is: 85,085.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,645.90 : 155,449.02 = 61,657.39 : x
  2. Step 2: Convert to fraction form
    112,645.90/155,449.02 = 61,657.39/x
  3. Step 3: Cross multiply
    112,645.90x = 155,449.02 × 61,657.39
  4. Step 4: Simplify right side
    112,645.90x = 9,584,580,851.26
  5. Step 5: Solve for x
    x = 9,584,580,851.26/112,645.90
  6. Step 6: Final answer
    x = 85,085.93

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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.