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Finding the Fourth Proportional to 108,781.76, 150,136.80 and 64,095.68

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Solution

The fourth proportional to 108,781.76, 150,136.80 and 64,095.68 is: 88,462.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,781.76 : 150,136.80 = 64,095.68 : x
  2. Step 2: Convert to fraction form
    108,781.76/150,136.80 = 64,095.68/x
  3. Step 3: Cross multiply
    108,781.76x = 150,136.80 × 64,095.68
  4. Step 4: Simplify right side
    108,781.76x = 9,623,120,289.02
  5. Step 5: Solve for x
    x = 9,623,120,289.02/108,781.76
  6. Step 6: Final answer
    x = 88,462.63

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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.