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Finding the Fourth Proportional to 113,749, 156,982.48 and 62,771.80

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Solution

The fourth proportional to 113,749, 156,982.48 and 62,771.80 is: 86,629.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,749 : 156,982.48 = 62,771.80 : x
  2. Step 2: Convert to fraction form
    113,749/156,982.48 = 62,771.80/x
  3. Step 3: Cross multiply
    113,749x = 156,982.48 × 62,771.80
  4. Step 4: Simplify right side
    113,749x = 9,854,072,838.06
  5. Step 5: Solve for x
    x = 9,854,072,838.06/113,749
  6. Step 6: Final answer
    x = 86,629.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.