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Finding the Fourth Proportional to 124,771.40, 187,165.20 and 65,722.40

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Solution

The fourth proportional to 124,771.40, 187,165.20 and 65,722.40 is: 98,587.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,771.40 : 187,165.20 = 65,722.40 : x
  2. Step 2: Convert to fraction form
    124,771.40/187,165.20 = 65,722.40/x
  3. Step 3: Cross multiply
    124,771.40x = 187,165.20 × 65,722.40
  4. Step 4: Simplify right side
    124,771.40x = 12,300,946,140.48
  5. Step 5: Solve for x
    x = 12,300,946,140.48/124,771.40
  6. Step 6: Final answer
    x = 98,587.87

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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.