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Finding the Fourth Proportional to 118,365.76, 163,344.36 and 70,621.12

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Solution

The fourth proportional to 118,365.76, 163,344.36 and 70,621.12 is: 97,456.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,365.76 : 163,344.36 = 70,621.12 : x
  2. Step 2: Convert to fraction form
    118,365.76/163,344.36 = 70,621.12/x
  3. Step 3: Cross multiply
    118,365.76x = 163,344.36 × 70,621.12
  4. Step 4: Simplify right side
    118,365.76x = 11,535,561,648.88
  5. Step 5: Solve for x
    x = 11,535,561,648.88/118,365.76
  6. Step 6: Final answer
    x = 97,456.91

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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.