Home / 78,215.38-116,316.81-75,724.25

Finding the Fourth Proportional to 78,215.38, 116,316.81 and 75,724.25

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Solution

The fourth proportional to 78,215.38, 116,316.81 and 75,724.25 is: 112,612.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,215.38 : 116,316.81 = 75,724.25 : x
  2. Step 2: Convert to fraction form
    78,215.38/116,316.81 = 75,724.25/x
  3. Step 3: Cross multiply
    78,215.38x = 116,316.81 × 75,724.25
  4. Step 4: Simplify right side
    78,215.38x = 8,808,002,618.06
  5. Step 5: Solve for x
    x = 8,808,002,618.06/78,215.38
  6. Step 6: Final answer
    x = 112,612.16

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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.