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Finding the Fourth Proportional to 140,580.10, 210,870.15 and 127,020.70

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Solution

The fourth proportional to 140,580.10, 210,870.15 and 127,020.70 is: 190,531.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,580.10 : 210,870.15 = 127,020.70 : x
  2. Step 2: Convert to fraction form
    140,580.10/210,870.15 = 127,020.70/x
  3. Step 3: Cross multiply
    140,580.10x = 210,870.15 × 127,020.70
  4. Step 4: Simplify right side
    140,580.10x = 26,784,874,062.11
  5. Step 5: Solve for x
    x = 26,784,874,062.11/140,580.10
  6. Step 6: Final answer
    x = 190,531.05

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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.