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Finding the Fourth Proportional to 140,280.60, 210,420.90 and 125,117.40

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Solution

The fourth proportional to 140,280.60, 210,420.90 and 125,117.40 is: 187,676.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,280.60 : 210,420.90 = 125,117.40 : x
  2. Step 2: Convert to fraction form
    140,280.60/210,420.90 = 125,117.40/x
  3. Step 3: Cross multiply
    140,280.60x = 210,420.90 × 125,117.40
  4. Step 4: Simplify right side
    140,280.60x = 26,327,315,913.66
  5. Step 5: Solve for x
    x = 26,327,315,913.66/140,280.60
  6. Step 6: Final answer
    x = 187,676.10

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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.