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Finding the Fourth Proportional to 177,878.80, 266,688.60 and 72,643.60

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Solution

The fourth proportional to 177,878.80, 266,688.60 and 72,643.60 is: 108,912.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,878.80 : 266,688.60 = 72,643.60 : x
  2. Step 2: Convert to fraction form
    177,878.80/266,688.60 = 72,643.60/x
  3. Step 3: Cross multiply
    177,878.80x = 266,688.60 × 72,643.60
  4. Step 4: Simplify right side
    177,878.80x = 19,373,219,982.96
  5. Step 5: Solve for x
    x = 19,373,219,982.96/177,878.80
  6. Step 6: Final answer
    x = 108,912.47

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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.