Home / 78,126.27-117,196.32-21,966.87

Finding the Fourth Proportional to 78,126.27, 117,196.32 and 21,966.87

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Solution

The fourth proportional to 78,126.27, 117,196.32 and 21,966.87 is: 32,952.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,126.27 : 117,196.32 = 21,966.87 : x
  2. Step 2: Convert to fraction form
    78,126.27/117,196.32 = 21,966.87/x
  3. Step 3: Cross multiply
    78,126.27x = 117,196.32 × 21,966.87
  4. Step 4: Simplify right side
    78,126.27x = 2,574,436,325.92
  5. Step 5: Solve for x
    x = 2,574,436,325.92/78,126.27
  6. Step 6: Final answer
    x = 32,952.25

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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.