Home / 104,032.20-156,048.30-91,979.40

Finding the Fourth Proportional to 104,032.20, 156,048.30 and 91,979.40

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Solution

The fourth proportional to 104,032.20, 156,048.30 and 91,979.40 is: 137,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,032.20 : 156,048.30 = 91,979.40 : x
  2. Step 2: Convert to fraction form
    104,032.20/156,048.30 = 91,979.40/x
  3. Step 3: Cross multiply
    104,032.20x = 156,048.30 × 91,979.40
  4. Step 4: Simplify right side
    104,032.20x = 14,353,229,005.02
  5. Step 5: Solve for x
    x = 14,353,229,005.02/104,032.20
  6. Step 6: Final answer
    x = 137,969.10

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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.