Home / 158,604.49-218,877-86,983.89

Finding the Fourth Proportional to 158,604.49, 218,877 and 86,983.89

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Solution

The fourth proportional to 158,604.49, 218,877 and 86,983.89 is: 120,039.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,604.49 : 218,877 = 86,983.89 : x
  2. Step 2: Convert to fraction form
    158,604.49/218,877 = 86,983.89/x
  3. Step 3: Cross multiply
    158,604.49x = 218,877 × 86,983.89
  4. Step 4: Simplify right side
    158,604.49x = 19,038,772,891.53
  5. Step 5: Solve for x
    x = 19,038,772,891.53/158,604.49
  6. Step 6: Final answer
    x = 120,039.31

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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.