Home / 115,347.78-172,938.60-70,882.65

Finding the Fourth Proportional to 115,347.78, 172,938.60 and 70,882.65

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Solution

The fourth proportional to 115,347.78, 172,938.60 and 70,882.65 is: 106,272.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,347.78 : 172,938.60 = 70,882.65 : x
  2. Step 2: Convert to fraction form
    115,347.78/172,938.60 = 70,882.65/x
  3. Step 3: Cross multiply
    115,347.78x = 172,938.60 × 70,882.65
  4. Step 4: Simplify right side
    115,347.78x = 12,258,346,255.29
  5. Step 5: Solve for x
    x = 12,258,346,255.29/115,347.78
  6. Step 6: Final answer
    x = 106,272.93

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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.