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Finding the Fourth Proportional to 99,659.94, 137,528.16 and 54,338.01

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Solution

The fourth proportional to 99,659.94, 137,528.16 and 54,338.01 is: 74,985.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,659.94 : 137,528.16 = 54,338.01 : x
  2. Step 2: Convert to fraction form
    99,659.94/137,528.16 = 54,338.01/x
  3. Step 3: Cross multiply
    99,659.94x = 137,528.16 × 54,338.01
  4. Step 4: Simplify right side
    99,659.94x = 7,473,006,533.36
  5. Step 5: Solve for x
    x = 7,473,006,533.36/99,659.94
  6. Step 6: Final answer
    x = 74,985.06

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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.