Home / 124,018.08-171,223.92-81,649.68

Finding the Fourth Proportional to 124,018.08, 171,223.92 and 81,649.68

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Solution

The fourth proportional to 124,018.08, 171,223.92 and 81,649.68 is: 112,728.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,018.08 : 171,223.92 = 81,649.68 : x
  2. Step 2: Convert to fraction form
    124,018.08/171,223.92 = 81,649.68/x
  3. Step 3: Cross multiply
    124,018.08x = 171,223.92 × 81,649.68
  4. Step 4: Simplify right side
    124,018.08x = 13,980,378,276.35
  5. Step 5: Solve for x
    x = 13,980,378,276.35/124,018.08
  6. Step 6: Final answer
    x = 112,728.55

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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.