Home / 158,432.63-218,637.02-86,815.37

Finding the Fourth Proportional to 158,432.63, 218,637.02 and 86,815.37

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Solution

The fourth proportional to 158,432.63, 218,637.02 and 86,815.37 is: 119,805.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,432.63 : 218,637.02 = 86,815.37 : x
  2. Step 2: Convert to fraction form
    158,432.63/218,637.02 = 86,815.37/x
  3. Step 3: Cross multiply
    158,432.63x = 218,637.02 × 86,815.37
  4. Step 4: Simplify right side
    158,432.63x = 18,981,054,550.63
  5. Step 5: Solve for x
    x = 18,981,054,550.63/158,432.63
  6. Step 6: Final answer
    x = 119,805.21

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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.