Home / 153,042.48-211,256.28-89,400.78

Finding the Fourth Proportional to 153,042.48, 211,256.28 and 89,400.78

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Solution

The fourth proportional to 153,042.48, 211,256.28 and 89,400.78 is: 123,406.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,042.48 : 211,256.28 = 89,400.78 : x
  2. Step 2: Convert to fraction form
    153,042.48/211,256.28 = 89,400.78/x
  3. Step 3: Cross multiply
    153,042.48x = 211,256.28 × 89,400.78
  4. Step 4: Simplify right side
    153,042.48x = 18,886,476,211.90
  5. Step 5: Solve for x
    x = 18,886,476,211.90/153,042.48
  6. Step 6: Final answer
    x = 123,406.76

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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.