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Finding the Fourth Proportional to 177,920.67, 266,979.54 and 72,813.45

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Solution

The fourth proportional to 177,920.67, 266,979.54 and 72,813.45 is: 109,260.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,920.67 : 266,979.54 = 72,813.45 : x
  2. Step 2: Convert to fraction form
    177,920.67/266,979.54 = 72,813.45/x
  3. Step 3: Cross multiply
    177,920.67x = 266,979.54 × 72,813.45
  4. Step 4: Simplify right side
    177,920.67x = 19,439,701,386.81
  5. Step 5: Solve for x
    x = 19,439,701,386.81/177,920.67
  6. Step 6: Final answer
    x = 109,260.50

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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.