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Finding the Fourth Proportional to 104,833.80, 157,077.90 and 87,208.20

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Solution

The fourth proportional to 104,833.80, 157,077.90 and 87,208.20 is: 130,668.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,833.80 : 157,077.90 = 87,208.20 : x
  2. Step 2: Convert to fraction form
    104,833.80/157,077.90 = 87,208.20/x
  3. Step 3: Cross multiply
    104,833.80x = 157,077.90 × 87,208.20
  4. Step 4: Simplify right side
    104,833.80x = 13,698,480,918.78
  5. Step 5: Solve for x
    x = 13,698,480,918.78/104,833.80
  6. Step 6: Final answer
    x = 130,668.55

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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.