Home / 102,987.77-154,503.71-31,908.83

Finding the Fourth Proportional to 102,987.77, 154,503.71 and 31,908.83

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Solution

The fourth proportional to 102,987.77, 154,503.71 and 31,908.83 is: 47,870.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,987.77 : 154,503.71 = 31,908.83 : x
  2. Step 2: Convert to fraction form
    102,987.77/154,503.71 = 31,908.83/x
  3. Step 3: Cross multiply
    102,987.77x = 154,503.71 × 31,908.83
  4. Step 4: Simplify right side
    102,987.77x = 4,930,033,177.06
  5. Step 5: Solve for x
    x = 4,930,033,177.06/102,987.77
  6. Step 6: Final answer
    x = 47,870.08

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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.