Home / 82,154.43-113,176.53-78,152.22

Finding the Fourth Proportional to 82,154.43, 113,176.53 and 78,152.22

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Solution

The fourth proportional to 82,154.43, 113,176.53 and 78,152.22 is: 107,663.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,154.43 : 113,176.53 = 78,152.22 : x
  2. Step 2: Convert to fraction form
    82,154.43/113,176.53 = 78,152.22/x
  3. Step 3: Cross multiply
    82,154.43x = 113,176.53 × 78,152.22
  4. Step 4: Simplify right side
    82,154.43x = 8,844,997,071.40
  5. Step 5: Solve for x
    x = 8,844,997,071.40/82,154.43
  6. Step 6: Final answer
    x = 107,663.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.