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Finding the Fourth Proportional to 99,159.74, 148,739.79 and 69,709.34

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Solution

The fourth proportional to 99,159.74, 148,739.79 and 69,709.34 is: 104,564.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,159.74 : 148,739.79 = 69,709.34 : x
  2. Step 2: Convert to fraction form
    99,159.74/148,739.79 = 69,709.34/x
  3. Step 3: Cross multiply
    99,159.74x = 148,739.79 × 69,709.34
  4. Step 4: Simplify right side
    99,159.74x = 10,368,552,592.64
  5. Step 5: Solve for x
    x = 10,368,552,592.64/99,159.74
  6. Step 6: Final answer
    x = 104,564.14

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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.