Home / 105,569.54-157,561.42-91,274.78

Finding the Fourth Proportional to 105,569.54, 157,561.42 and 91,274.78

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Solution

The fourth proportional to 105,569.54, 157,561.42 and 91,274.78 is: 136,226.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,569.54 : 157,561.42 = 91,274.78 : x
  2. Step 2: Convert to fraction form
    105,569.54/157,561.42 = 91,274.78/x
  3. Step 3: Cross multiply
    105,569.54x = 157,561.42 × 91,274.78
  4. Step 4: Simplify right side
    105,569.54x = 14,381,383,946.99
  5. Step 5: Solve for x
    x = 14,381,383,946.99/105,569.54
  6. Step 6: Final answer
    x = 136,226.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.