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Finding the Fourth Proportional to 83,349.58, 124,878.60 and 69,399.30

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Solution

The fourth proportional to 83,349.58, 124,878.60 and 69,399.30 is: 103,977.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,349.58 : 124,878.60 = 69,399.30 : x
  2. Step 2: Convert to fraction form
    83,349.58/124,878.60 = 69,399.30/x
  3. Step 3: Cross multiply
    83,349.58x = 124,878.60 × 69,399.30
  4. Step 4: Simplify right side
    83,349.58x = 8,666,487,424.98
  5. Step 5: Solve for x
    x = 8,666,487,424.98/83,349.58
  6. Step 6: Final answer
    x = 103,977.58

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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.