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Finding the Fourth Proportional to 90,220.61, 134,777.66 and 65,045.81

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Solution

The fourth proportional to 90,220.61, 134,777.66 and 65,045.81 is: 97,169.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,220.61 : 134,777.66 = 65,045.81 : x
  2. Step 2: Convert to fraction form
    90,220.61/134,777.66 = 65,045.81/x
  3. Step 3: Cross multiply
    90,220.61x = 134,777.66 × 65,045.81
  4. Step 4: Simplify right side
    90,220.61x = 8,766,721,065.49
  5. Step 5: Solve for x
    x = 8,766,721,065.49/90,220.61
  6. Step 6: Final answer
    x = 97,169.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.