Home / 158,055.41-218,118.20-86,433.89

Finding the Fourth Proportional to 158,055.41, 218,118.20 and 86,433.89

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Solution

The fourth proportional to 158,055.41, 218,118.20 and 86,433.89 is: 119,279.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,055.41 : 218,118.20 = 86,433.89 : x
  2. Step 2: Convert to fraction form
    158,055.41/218,118.20 = 86,433.89/x
  3. Step 3: Cross multiply
    158,055.41x = 218,118.20 × 86,433.89
  4. Step 4: Simplify right side
    158,055.41x = 18,852,802,983.04
  5. Step 5: Solve for x
    x = 18,852,802,983.04/158,055.41
  6. Step 6: Final answer
    x = 119,279.71

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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.