Home / 112,865.22-155,753.15-61,877.34

Finding the Fourth Proportional to 112,865.22, 155,753.15 and 61,877.34

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Solution

The fourth proportional to 112,865.22, 155,753.15 and 61,877.34 is: 85,390.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,865.22 : 155,753.15 = 61,877.34 : x
  2. Step 2: Convert to fraction form
    112,865.22/155,753.15 = 61,877.34/x
  3. Step 3: Cross multiply
    112,865.22x = 155,753.15 × 61,877.34
  4. Step 4: Simplify right side
    112,865.22x = 9,637,590,309.23
  5. Step 5: Solve for x
    x = 9,637,590,309.23/112,865.22
  6. Step 6: Final answer
    x = 85,390.26

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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.