Home / 174,726.72-261,662.40-81,259.20

Finding the Fourth Proportional to 174,726.72, 261,662.40 and 81,259.20

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Solution

The fourth proportional to 174,726.72, 261,662.40 and 81,259.20 is: 121,689.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,726.72 : 261,662.40 = 81,259.20 : x
  2. Step 2: Convert to fraction form
    174,726.72/261,662.40 = 81,259.20/x
  3. Step 3: Cross multiply
    174,726.72x = 261,662.40 × 81,259.20
  4. Step 4: Simplify right side
    174,726.72x = 21,262,477,294.08
  5. Step 5: Solve for x
    x = 21,262,477,294.08/174,726.72
  6. Step 6: Final answer
    x = 121,689.90

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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.