Home / 85,013.12-127,493.76-68,333.60

Finding the Fourth Proportional to 85,013.12, 127,493.76 and 68,333.60

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Solution

The fourth proportional to 85,013.12, 127,493.76 and 68,333.60 is: 102,479.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,013.12 : 127,493.76 = 68,333.60 : x
  2. Step 2: Convert to fraction form
    85,013.12/127,493.76 = 68,333.60/x
  3. Step 3: Cross multiply
    85,013.12x = 127,493.76 × 68,333.60
  4. Step 4: Simplify right side
    85,013.12x = 8,712,107,598.34
  5. Step 5: Solve for x
    x = 8,712,107,598.34/85,013.12
  6. Step 6: Final answer
    x = 102,479.57

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1.5x scale

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.