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Finding the Fourth Proportional to 127,312.45, 175,692.42 and 69,950.85

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Solution

The fourth proportional to 127,312.45, 175,692.42 and 69,950.85 is: 96,532.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,312.45 : 175,692.42 = 69,950.85 : x
  2. Step 2: Convert to fraction form
    127,312.45/175,692.42 = 69,950.85/x
  3. Step 3: Cross multiply
    127,312.45x = 175,692.42 × 69,950.85
  4. Step 4: Simplify right side
    127,312.45x = 12,289,833,458.71
  5. Step 5: Solve for x
    x = 12,289,833,458.71/127,312.45
  6. Step 6: Final answer
    x = 96,532.85

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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.