Home / 78,126.68-116,503.97-77,416.25

Finding the Fourth Proportional to 78,126.68, 116,503.97 and 77,416.25

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Solution

The fourth proportional to 78,126.68, 116,503.97 and 77,416.25 is: 115,444.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,126.68 : 116,503.97 = 77,416.25 : x
  2. Step 2: Convert to fraction form
    78,126.68/116,503.97 = 77,416.25/x
  3. Step 3: Cross multiply
    78,126.68x = 116,503.97 × 77,416.25
  4. Step 4: Simplify right side
    78,126.68x = 9,019,299,497.91
  5. Step 5: Solve for x
    x = 9,019,299,497.91/78,126.68
  6. Step 6: Final answer
    x = 115,444.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.