Home / 158,319.07-218,470.30-86,699.95

Finding the Fourth Proportional to 158,319.07, 218,470.30 and 86,699.95

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Solution

The fourth proportional to 158,319.07, 218,470.30 and 86,699.95 is: 119,640.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,319.07 : 218,470.30 = 86,699.95 : x
  2. Step 2: Convert to fraction form
    158,319.07/218,470.30 = 86,699.95/x
  3. Step 3: Cross multiply
    158,319.07x = 218,470.30 × 86,699.95
  4. Step 4: Simplify right side
    158,319.07x = 18,941,364,086.49
  5. Step 5: Solve for x
    x = 18,941,364,086.49/158,319.07
  6. Step 6: Final answer
    x = 119,640.45

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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.