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Finding the Fourth Proportional to 78,013.01, 117,085.16 and 73,092.26

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Solution

The fourth proportional to 78,013.01, 117,085.16 and 73,092.26 is: 109,699.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,013.01 : 117,085.16 = 73,092.26 : x
  2. Step 2: Convert to fraction form
    78,013.01/117,085.16 = 73,092.26/x
  3. Step 3: Cross multiply
    78,013.01x = 117,085.16 × 73,092.26
  4. Step 4: Simplify right side
    78,013.01x = 8,558,019,432.31
  5. Step 5: Solve for x
    x = 8,558,019,432.31/78,013.01
  6. Step 6: Final answer
    x = 109,699.90

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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.