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Finding the Fourth Proportional to 108,777.80, 150,111.06 and 61,042.76

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Solution

The fourth proportional to 108,777.80, 150,111.06 and 61,042.76 is: 84,237.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,777.80 : 150,111.06 = 61,042.76 : x
  2. Step 2: Convert to fraction form
    108,777.80/150,111.06 = 61,042.76/x
  3. Step 3: Cross multiply
    108,777.80x = 150,111.06 × 61,042.76
  4. Step 4: Simplify right side
    108,777.80x = 9,163,193,408.93
  5. Step 5: Solve for x
    x = 9,163,193,408.93/108,777.80
  6. Step 6: Final answer
    x = 84,237.72

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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.