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Finding the Fourth Proportional to 177,865.40, 266,798.10 and 72,759.80

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Solution

The fourth proportional to 177,865.40, 266,798.10 and 72,759.80 is: 109,139.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,865.40 : 266,798.10 = 72,759.80 : x
  2. Step 2: Convert to fraction form
    177,865.40/266,798.10 = 72,759.80/x
  3. Step 3: Cross multiply
    177,865.40x = 266,798.10 × 72,759.80
  4. Step 4: Simplify right side
    177,865.40x = 19,412,176,396.38
  5. Step 5: Solve for x
    x = 19,412,176,396.38/177,865.40
  6. Step 6: Final answer
    x = 109,139.70

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1.5x scale

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.