Home / 127,964.20-191,687.10-72,495.40

Finding the Fourth Proportional to 127,964.20, 191,687.10 and 72,495.40

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Solution

The fourth proportional to 127,964.20, 191,687.10 and 72,495.40 is: 108,596.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,964.20 : 191,687.10 = 72,495.40 : x
  2. Step 2: Convert to fraction form
    127,964.20/191,687.10 = 72,495.40/x
  3. Step 3: Cross multiply
    127,964.20x = 191,687.10 × 72,495.40
  4. Step 4: Simplify right side
    127,964.20x = 13,896,432,989.34
  5. Step 5: Solve for x
    x = 13,896,432,989.34/127,964.20
  6. Step 6: Final answer
    x = 108,596.26

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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.