Home / 158,420.13-218,619.84-86,802.90

Finding the Fourth Proportional to 158,420.13, 218,619.84 and 86,802.90

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Solution

The fourth proportional to 158,420.13, 218,619.84 and 86,802.90 is: 119,788.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,420.13 : 218,619.84 = 86,802.90 : x
  2. Step 2: Convert to fraction form
    158,420.13/218,619.84 = 86,802.90/x
  3. Step 3: Cross multiply
    158,420.13x = 218,619.84 × 86,802.90
  4. Step 4: Simplify right side
    158,420.13x = 18,976,836,109.54
  5. Step 5: Solve for x
    x = 18,976,836,109.54/158,420.13
  6. Step 6: Final answer
    x = 119,788.04

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1.5x scale

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.