Home / 99,581.83-137,421.30-54,260.35

Finding the Fourth Proportional to 99,581.83, 137,421.30 and 54,260.35

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Solution

The fourth proportional to 99,581.83, 137,421.30 and 54,260.35 is: 74,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,581.83 : 137,421.30 = 54,260.35 : x
  2. Step 2: Convert to fraction form
    99,581.83/137,421.30 = 54,260.35/x
  3. Step 3: Cross multiply
    99,581.83x = 137,421.30 × 54,260.35
  4. Step 4: Simplify right side
    99,581.83x = 7,456,527,835.46
  5. Step 5: Solve for x
    x = 7,456,527,835.46/99,581.83
  6. Step 6: Final answer
    x = 74,878.40

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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.