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Finding the Fourth Proportional to 124,462.40, 186,693.60 and 68,280.80

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Solution

The fourth proportional to 124,462.40, 186,693.60 and 68,280.80 is: 102,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,462.40 : 186,693.60 = 68,280.80 : x
  2. Step 2: Convert to fraction form
    124,462.40/186,693.60 = 68,280.80/x
  3. Step 3: Cross multiply
    124,462.40x = 186,693.60 × 68,280.80
  4. Step 4: Simplify right side
    124,462.40x = 12,747,588,362.88
  5. Step 5: Solve for x
    x = 12,747,588,362.88/124,462.40
  6. Step 6: Final answer
    x = 102,421.20

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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.