Home / 108,132.18-149,235.11-89,950.81

Finding the Fourth Proportional to 108,132.18, 149,235.11 and 89,950.81

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Solution

The fourth proportional to 108,132.18, 149,235.11 and 89,950.81 is: 124,142.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,132.18 : 149,235.11 = 89,950.81 : x
  2. Step 2: Convert to fraction form
    108,132.18/149,235.11 = 89,950.81/x
  3. Step 3: Cross multiply
    108,132.18x = 149,235.11 × 89,950.81
  4. Step 4: Simplify right side
    108,132.18x = 13,423,819,024.94
  5. Step 5: Solve for x
    x = 13,423,819,024.94/108,132.18
  6. Step 6: Final answer
    x = 124,142.68

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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.