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Finding the Fourth Proportional to 127,283.40, 190,925.10 and 125,315.10

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Solution

The fourth proportional to 127,283.40, 190,925.10 and 125,315.10 is: 187,972.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,283.40 : 190,925.10 = 125,315.10 : x
  2. Step 2: Convert to fraction form
    127,283.40/190,925.10 = 125,315.10/x
  3. Step 3: Cross multiply
    127,283.40x = 190,925.10 × 125,315.10
  4. Step 4: Simplify right side
    127,283.40x = 23,925,797,999.01
  5. Step 5: Solve for x
    x = 23,925,797,999.01/127,283.40
  6. Step 6: Final answer
    x = 187,972.65

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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.