Home / 115,220.90-172,831.35-36,341.28

Finding the Fourth Proportional to 115,220.90, 172,831.35 and 36,341.28

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Solution

The fourth proportional to 115,220.90, 172,831.35 and 36,341.28 is: 54,511.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,220.90 : 172,831.35 = 36,341.28 : x
  2. Step 2: Convert to fraction form
    115,220.90/172,831.35 = 36,341.28/x
  3. Step 3: Cross multiply
    115,220.90x = 172,831.35 × 36,341.28
  4. Step 4: Simplify right side
    115,220.90x = 6,280,912,483.13
  5. Step 5: Solve for x
    x = 6,280,912,483.13/115,220.90
  6. Step 6: Final answer
    x = 54,511.92

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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.