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Finding the Fourth Proportional to 99,706.94, 137,595.68 and 57,273.67

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Solution

The fourth proportional to 99,706.94, 137,595.68 and 57,273.67 is: 79,037.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,706.94 : 137,595.68 = 57,273.67 : x
  2. Step 2: Convert to fraction form
    99,706.94/137,595.68 = 57,273.67/x
  3. Step 3: Cross multiply
    99,706.94x = 137,595.68 × 57,273.67
  4. Step 4: Simplify right side
    99,706.94x = 7,880,609,569.75
  5. Step 5: Solve for x
    x = 7,880,609,569.75/99,706.94
  6. Step 6: Final answer
    x = 79,037.72

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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.