Home / 145,282.36-218,251.61-86,156.82

Finding the Fourth Proportional to 145,282.36, 218,251.61 and 86,156.82

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Solution

The fourth proportional to 145,282.36, 218,251.61 and 86,156.82 is: 129,429.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,282.36 : 218,251.61 = 86,156.82 : x
  2. Step 2: Convert to fraction form
    145,282.36/218,251.61 = 86,156.82/x
  3. Step 3: Cross multiply
    145,282.36x = 218,251.61 × 86,156.82
  4. Step 4: Simplify right side
    145,282.36x = 18,803,864,677.48
  5. Step 5: Solve for x
    x = 18,803,864,677.48/145,282.36
  6. Step 6: Final answer
    x = 129,429.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.