Home / 132,347.20-198,520.80-70,139.20

Finding the Fourth Proportional to 132,347.20, 198,520.80 and 70,139.20

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Solution

The fourth proportional to 132,347.20, 198,520.80 and 70,139.20 is: 105,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,347.20 : 198,520.80 = 70,139.20 : x
  2. Step 2: Convert to fraction form
    132,347.20/198,520.80 = 70,139.20/x
  3. Step 3: Cross multiply
    132,347.20x = 198,520.80 × 70,139.20
  4. Step 4: Simplify right side
    132,347.20x = 13,924,090,095.36
  5. Step 5: Solve for x
    x = 13,924,090,095.36/132,347.20
  6. Step 6: Final answer
    x = 105,208.80

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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.