Home / 163,443.12-245,146.32-45,131.28

Finding the Fourth Proportional to 163,443.12, 245,146.32 and 45,131.28

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Solution

The fourth proportional to 163,443.12, 245,146.32 and 45,131.28 is: 67,691.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,443.12 : 245,146.32 = 45,131.28 : x
  2. Step 2: Convert to fraction form
    163,443.12/245,146.32 = 45,131.28/x
  3. Step 3: Cross multiply
    163,443.12x = 245,146.32 × 45,131.28
  4. Step 4: Simplify right side
    163,443.12x = 11,063,767,208.89
  5. Step 5: Solve for x
    x = 11,063,767,208.89/163,443.12
  6. Step 6: Final answer
    x = 67,691.85

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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.