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Finding the Fourth Proportional to 99,302.67, 137,038.17 and 53,980.65

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Solution

The fourth proportional to 99,302.67, 137,038.17 and 53,980.65 is: 74,493.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,302.67 : 137,038.17 = 53,980.65 : x
  2. Step 2: Convert to fraction form
    99,302.67/137,038.17 = 53,980.65/x
  3. Step 3: Cross multiply
    99,302.67x = 137,038.17 × 53,980.65
  4. Step 4: Simplify right side
    99,302.67x = 7,397,409,491.41
  5. Step 5: Solve for x
    x = 7,397,409,491.41/99,302.67
  6. Step 6: Final answer
    x = 74,493.56

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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.