Home / 78,131.19-117,202.25-38,677.71

Finding the Fourth Proportional to 78,131.19, 117,202.25 and 38,677.71

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Solution

The fourth proportional to 78,131.19, 117,202.25 and 38,677.71 is: 58,019.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,131.19 : 117,202.25 = 38,677.71 : x
  2. Step 2: Convert to fraction form
    78,131.19/117,202.25 = 38,677.71/x
  3. Step 3: Cross multiply
    78,131.19x = 117,202.25 × 38,677.71
  4. Step 4: Simplify right side
    78,131.19x = 4,533,113,857.45
  5. Step 5: Solve for x
    x = 4,533,113,857.45/78,131.19
  6. Step 6: Final answer
    x = 58,019.26

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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.