Home / 115,410.84-159,269.65-72,392.15

Finding the Fourth Proportional to 115,410.84, 159,269.65 and 72,392.15

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Solution

The fourth proportional to 115,410.84, 159,269.65 and 72,392.15 is: 99,902.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,410.84 : 159,269.65 = 72,392.15 : x
  2. Step 2: Convert to fraction form
    115,410.84/159,269.65 = 72,392.15/x
  3. Step 3: Cross multiply
    115,410.84x = 159,269.65 × 72,392.15
  4. Step 4: Simplify right side
    115,410.84x = 11,529,872,429.46
  5. Step 5: Solve for x
    x = 11,529,872,429.46/115,410.84
  6. Step 6: Final answer
    x = 99,902.86

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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.