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Finding the Fourth Proportional to 123,235.65, 170,064.83 and 69,520.50

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Solution

The fourth proportional to 123,235.65, 170,064.83 and 69,520.50 is: 95,938.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,235.65 : 170,064.83 = 69,520.50 : x
  2. Step 2: Convert to fraction form
    123,235.65/170,064.83 = 69,520.50/x
  3. Step 3: Cross multiply
    123,235.65x = 170,064.83 × 69,520.50
  4. Step 4: Simplify right side
    123,235.65x = 11,822,991,666.41
  5. Step 5: Solve for x
    x = 11,822,991,666.41/123,235.65
  6. Step 6: Final answer
    x = 95,938.08

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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.