Home / 153,498.78-211,747.23-105,669.36

Finding the Fourth Proportional to 153,498.78, 211,747.23 and 105,669.36

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Solution

The fourth proportional to 153,498.78, 211,747.23 and 105,669.36 is: 145,767.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,498.78 : 211,747.23 = 105,669.36 : x
  2. Step 2: Convert to fraction form
    153,498.78/211,747.23 = 105,669.36/x
  3. Step 3: Cross multiply
    153,498.78x = 211,747.23 × 105,669.36
  4. Step 4: Simplify right side
    153,498.78x = 22,375,194,275.87
  5. Step 5: Solve for x
    x = 22,375,194,275.87/153,498.78
  6. Step 6: Final answer
    x = 145,767.90

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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.