Home / 108,102.63-149,138.67-72,235.83

Finding the Fourth Proportional to 108,102.63, 149,138.67 and 72,235.83

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Solution

The fourth proportional to 108,102.63, 149,138.67 and 72,235.83 is: 99,656.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,102.63 : 149,138.67 = 72,235.83 : x
  2. Step 2: Convert to fraction form
    108,102.63/149,138.67 = 72,235.83/x
  3. Step 3: Cross multiply
    108,102.63x = 149,138.67 × 72,235.83
  4. Step 4: Simplify right side
    108,102.63x = 10,773,155,612.55
  5. Step 5: Solve for x
    x = 10,773,155,612.55/108,102.63
  6. Step 6: Final answer
    x = 99,656.74

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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.