Home / 99,455.61-149,064.74-69,306.53

Finding the Fourth Proportional to 99,455.61, 149,064.74 and 69,306.53

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Solution

The fourth proportional to 99,455.61, 149,064.74 and 69,306.53 is: 103,877.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,455.61 : 149,064.74 = 69,306.53 : x
  2. Step 2: Convert to fraction form
    99,455.61/149,064.74 = 69,306.53/x
  3. Step 3: Cross multiply
    99,455.61x = 149,064.74 × 69,306.53
  4. Step 4: Simplify right side
    99,455.61x = 10,331,159,861.69
  5. Step 5: Solve for x
    x = 10,331,159,861.69/99,455.61
  6. Step 6: Final answer
    x = 103,877.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.