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Finding the Fourth Proportional to 98,581.94, 135,901.47 and 70,238.42

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Solution

The fourth proportional to 98,581.94, 135,901.47 and 70,238.42 is: 96,828.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,581.94 : 135,901.47 = 70,238.42 : x
  2. Step 2: Convert to fraction form
    98,581.94/135,901.47 = 70,238.42/x
  3. Step 3: Cross multiply
    98,581.94x = 135,901.47 × 70,238.42
  4. Step 4: Simplify right side
    98,581.94x = 9,545,504,528.48
  5. Step 5: Solve for x
    x = 9,545,504,528.48/98,581.94
  6. Step 6: Final answer
    x = 96,828.13

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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.