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Finding the Fourth Proportional to 108,688.66, 149,988.45 and 60,941.86

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Solution

The fourth proportional to 108,688.66, 149,988.45 and 60,941.86 is: 84,098.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,688.66 : 149,988.45 = 60,941.86 : x
  2. Step 2: Convert to fraction form
    108,688.66/149,988.45 = 60,941.86/x
  3. Step 3: Cross multiply
    108,688.66x = 149,988.45 × 60,941.86
  4. Step 4: Simplify right side
    108,688.66x = 9,140,575,121.52
  5. Step 5: Solve for x
    x = 9,140,575,121.52/108,688.66
  6. Step 6: Final answer
    x = 84,098.70

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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.