Home / 138,081.71-190,550.95-77,652.34

Finding the Fourth Proportional to 138,081.71, 190,550.95 and 77,652.34

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Solution

The fourth proportional to 138,081.71, 190,550.95 and 77,652.34 is: 107,159.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,081.71 : 190,550.95 = 77,652.34 : x
  2. Step 2: Convert to fraction form
    138,081.71/190,550.95 = 77,652.34/x
  3. Step 3: Cross multiply
    138,081.71x = 190,550.95 × 77,652.34
  4. Step 4: Simplify right side
    138,081.71x = 14,796,726,486.21
  5. Step 5: Solve for x
    x = 14,796,726,486.21/138,081.71
  6. Step 6: Final answer
    x = 107,159.20

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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.