Home / 158,055.20-218,116.20-86,435.36

Finding the Fourth Proportional to 158,055.20, 218,116.20 and 86,435.36

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Solution

The fourth proportional to 158,055.20, 218,116.20 and 86,435.36 is: 119,280.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,055.20 : 218,116.20 = 86,435.36 : x
  2. Step 2: Convert to fraction form
    158,055.20/218,116.20 = 86,435.36/x
  3. Step 3: Cross multiply
    158,055.20x = 218,116.20 × 86,435.36
  4. Step 4: Simplify right side
    158,055.20x = 18,852,952,268.83
  5. Step 5: Solve for x
    x = 18,852,952,268.83/158,055.20
  6. Step 6: Final answer
    x = 119,280.81

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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.