Home / 163,618.18-245,432.63-45,279.61

Finding the Fourth Proportional to 163,618.18, 245,432.63 and 45,279.61

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Solution

The fourth proportional to 163,618.18, 245,432.63 and 45,279.61 is: 67,920.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,618.18 : 245,432.63 = 45,279.61 : x
  2. Step 2: Convert to fraction form
    163,618.18/245,432.63 = 45,279.61/x
  3. Step 3: Cross multiply
    163,618.18x = 245,432.63 × 45,279.61
  4. Step 4: Simplify right side
    163,618.18x = 11,113,092,314.11
  5. Step 5: Solve for x
    x = 11,113,092,314.11/163,618.18
  6. Step 6: Final answer
    x = 67,920.89

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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.