Home / 108,176.76-149,186.93-90,087.38

Finding the Fourth Proportional to 108,176.76, 149,186.93 and 90,087.38

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Solution

The fourth proportional to 108,176.76, 149,186.93 and 90,087.38 is: 124,239.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,176.76 : 149,186.93 = 90,087.38 : x
  2. Step 2: Convert to fraction form
    108,176.76/149,186.93 = 90,087.38/x
  3. Step 3: Cross multiply
    108,176.76x = 149,186.93 × 90,087.38
  4. Step 4: Simplify right side
    108,176.76x = 13,439,859,653.94
  5. Step 5: Solve for x
    x = 13,439,859,653.94/108,176.76
  6. Step 6: Final answer
    x = 124,239.81

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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.