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Finding the Fourth Proportional to 140,010.30, 210,015.45 and 127,763.10

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Solution

The fourth proportional to 140,010.30, 210,015.45 and 127,763.10 is: 191,644.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,010.30 : 210,015.45 = 127,763.10 : x
  2. Step 2: Convert to fraction form
    140,010.30/210,015.45 = 127,763.10/x
  3. Step 3: Cross multiply
    140,010.30x = 210,015.45 × 127,763.10
  4. Step 4: Simplify right side
    140,010.30x = 26,832,224,939.90
  5. Step 5: Solve for x
    x = 26,832,224,939.90/140,010.30
  6. Step 6: Final answer
    x = 191,644.65

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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.