Home / 109,420.80-163,967.16-84,423.48

Finding the Fourth Proportional to 109,420.80, 163,967.16 and 84,423.48

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Solution

The fourth proportional to 109,420.80, 163,967.16 and 84,423.48 is: 126,508.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,420.80 : 163,967.16 = 84,423.48 : x
  2. Step 2: Convert to fraction form
    109,420.80/163,967.16 = 84,423.48/x
  3. Step 3: Cross multiply
    109,420.80x = 163,967.16 × 84,423.48
  4. Step 4: Simplify right side
    109,420.80x = 13,842,678,252.92
  5. Step 5: Solve for x
    x = 13,842,678,252.92/109,420.80
  6. Step 6: Final answer
    x = 126,508.66

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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.