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Finding the Fourth Proportional to 75,266.70, 112,900.05 and 74,100.30

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Solution

The fourth proportional to 75,266.70, 112,900.05 and 74,100.30 is: 111,150.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,266.70 : 112,900.05 = 74,100.30 : x
  2. Step 2: Convert to fraction form
    75,266.70/112,900.05 = 74,100.30/x
  3. Step 3: Cross multiply
    75,266.70x = 112,900.05 × 74,100.30
  4. Step 4: Simplify right side
    75,266.70x = 8,365,927,575.02
  5. Step 5: Solve for x
    x = 8,365,927,575.02/75,266.70
  6. Step 6: Final answer
    x = 111,150.45

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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.