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Finding the Fourth Proportional to 99,400.70, 137,173.57 and 54,079.01

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Solution

The fourth proportional to 99,400.70, 137,173.57 and 54,079.01 is: 74,629.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,400.70 : 137,173.57 = 54,079.01 : x
  2. Step 2: Convert to fraction form
    99,400.70/137,173.57 = 54,079.01/x
  3. Step 3: Cross multiply
    99,400.70x = 137,173.57 × 54,079.01
  4. Step 4: Simplify right side
    99,400.70x = 7,418,210,863.77
  5. Step 5: Solve for x
    x = 7,418,210,863.77/99,400.70
  6. Step 6: Final answer
    x = 74,629.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.