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Finding the Fourth Proportional to 99,002.85, 136,574.06 and 70,724.94

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Solution

The fourth proportional to 99,002.85, 136,574.06 and 70,724.94 is: 97,564.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,002.85 : 136,574.06 = 70,724.94 : x
  2. Step 2: Convert to fraction form
    99,002.85/136,574.06 = 70,724.94/x
  3. Step 3: Cross multiply
    99,002.85x = 136,574.06 × 70,724.94
  4. Step 4: Simplify right side
    99,002.85x = 9,659,192,199.06
  5. Step 5: Solve for x
    x = 9,659,192,199.06/99,002.85
  6. Step 6: Final answer
    x = 97,564.79

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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.