Home / 132,005.20-198,007.80-72,810.40

Finding the Fourth Proportional to 132,005.20, 198,007.80 and 72,810.40

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Solution

The fourth proportional to 132,005.20, 198,007.80 and 72,810.40 is: 109,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,005.20 : 198,007.80 = 72,810.40 : x
  2. Step 2: Convert to fraction form
    132,005.20/198,007.80 = 72,810.40/x
  3. Step 3: Cross multiply
    132,005.20x = 198,007.80 × 72,810.40
  4. Step 4: Simplify right side
    132,005.20x = 14,417,027,121.12
  5. Step 5: Solve for x
    x = 14,417,027,121.12/132,005.20
  6. Step 6: Final answer
    x = 109,215.60

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1.5x scale

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.