Home / 112,703.59-155,531.21-61,719.66

Finding the Fourth Proportional to 112,703.59, 155,531.21 and 61,719.66

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Solution

The fourth proportional to 112,703.59, 155,531.21 and 61,719.66 is: 85,173.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,703.59 : 155,531.21 = 61,719.66 : x
  2. Step 2: Convert to fraction form
    112,703.59/155,531.21 = 61,719.66/x
  3. Step 3: Cross multiply
    112,703.59x = 155,531.21 × 61,719.66
  4. Step 4: Simplify right side
    112,703.59x = 9,599,333,400.59
  5. Step 5: Solve for x
    x = 9,599,333,400.59/112,703.59
  6. Step 6: Final answer
    x = 85,173.27

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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.