Home / 158,090.54-218,170.13-86,470.55

Finding the Fourth Proportional to 158,090.54, 218,170.13 and 86,470.55

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Solution

The fourth proportional to 158,090.54, 218,170.13 and 86,470.55 is: 119,332.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,090.54 : 218,170.13 = 86,470.55 : x
  2. Step 2: Convert to fraction form
    158,090.54/218,170.13 = 86,470.55/x
  3. Step 3: Cross multiply
    158,090.54x = 218,170.13 × 86,470.55
  4. Step 4: Simplify right side
    158,090.54x = 18,865,292,386.41
  5. Step 5: Solve for x
    x = 18,865,292,386.41/158,090.54
  6. Step 6: Final answer
    x = 119,332.21

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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.