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Finding the Fourth Proportional to 83,266.40, 124,899.60 and 74,518.40

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Solution

The fourth proportional to 83,266.40, 124,899.60 and 74,518.40 is: 111,777.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,266.40 : 124,899.60 = 74,518.40 : x
  2. Step 2: Convert to fraction form
    83,266.40/124,899.60 = 74,518.40/x
  3. Step 3: Cross multiply
    83,266.40x = 124,899.60 × 74,518.40
  4. Step 4: Simplify right side
    83,266.40x = 9,307,318,352.64
  5. Step 5: Solve for x
    x = 9,307,318,352.64/83,266.40
  6. Step 6: Final answer
    x = 111,777.60

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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.