Home / 92,548.47-138,763.98-78,513.33

Finding the Fourth Proportional to 92,548.47, 138,763.98 and 78,513.33

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Solution

The fourth proportional to 92,548.47, 138,763.98 and 78,513.33 is: 117,720.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,548.47 : 138,763.98 = 78,513.33 : x
  2. Step 2: Convert to fraction form
    92,548.47/138,763.98 = 78,513.33/x
  3. Step 3: Cross multiply
    92,548.47x = 138,763.98 × 78,513.33
  4. Step 4: Simplify right side
    92,548.47x = 10,894,822,153.85
  5. Step 5: Solve for x
    x = 10,894,822,153.85/92,548.47
  6. Step 6: Final answer
    x = 117,720.18

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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.