Home / 78,112.29-117,118.76-66,270.14

Finding the Fourth Proportional to 78,112.29, 117,118.76 and 66,270.14

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Solution

The fourth proportional to 78,112.29, 117,118.76 and 66,270.14 is: 99,363.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,112.29 : 117,118.76 = 66,270.14 : x
  2. Step 2: Convert to fraction form
    78,112.29/117,118.76 = 66,270.14/x
  3. Step 3: Cross multiply
    78,112.29x = 117,118.76 × 66,270.14
  4. Step 4: Simplify right side
    78,112.29x = 7,761,476,621.83
  5. Step 5: Solve for x
    x = 7,761,476,621.83/78,112.29
  6. Step 6: Final answer
    x = 99,363.07

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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.