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Finding the Fourth Proportional to 177,755.40, 266,784.30 and 72,649.80

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Solution

The fourth proportional to 177,755.40, 266,784.30 and 72,649.80 is: 109,036.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,755.40 : 266,784.30 = 72,649.80 : x
  2. Step 2: Convert to fraction form
    177,755.40/266,784.30 = 72,649.80/x
  3. Step 3: Cross multiply
    177,755.40x = 266,784.30 × 72,649.80
  4. Step 4: Simplify right side
    177,755.40x = 19,381,826,038.14
  5. Step 5: Solve for x
    x = 19,381,826,038.14/177,755.40
  6. Step 6: Final answer
    x = 109,036.50

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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.