Home / 88,638.17-133,115.81-85,070.66

Finding the Fourth Proportional to 88,638.17, 133,115.81 and 85,070.66

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Solution

The fourth proportional to 88,638.17, 133,115.81 and 85,070.66 is: 127,758.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,638.17 : 133,115.81 = 85,070.66 : x
  2. Step 2: Convert to fraction form
    88,638.17/133,115.81 = 85,070.66/x
  3. Step 3: Cross multiply
    88,638.17x = 133,115.81 × 85,070.66
  4. Step 4: Simplify right side
    88,638.17x = 11,324,248,722.20
  5. Step 5: Solve for x
    x = 11,324,248,722.20/88,638.17
  6. Step 6: Final answer
    x = 127,758.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.