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Finding the Fourth Proportional to 108,737.49, 150,021.58 and 65,730.14

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Solution

The fourth proportional to 108,737.49, 150,021.58 and 65,730.14 is: 90,685.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,737.49 : 150,021.58 = 65,730.14 : x
  2. Step 2: Convert to fraction form
    108,737.49/150,021.58 = 65,730.14/x
  3. Step 3: Cross multiply
    108,737.49x = 150,021.58 × 65,730.14
  4. Step 4: Simplify right side
    108,737.49x = 9,860,939,456.42
  5. Step 5: Solve for x
    x = 9,860,939,456.42/108,737.49
  6. Step 6: Final answer
    x = 90,685.74

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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.