Home / 105,731.46-145,908.74-60,423.30

Finding the Fourth Proportional to 105,731.46, 145,908.74 and 60,423.30

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Solution

The fourth proportional to 105,731.46, 145,908.74 and 60,423.30 is: 83,383.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,731.46 : 145,908.74 = 60,423.30 : x
  2. Step 2: Convert to fraction form
    105,731.46/145,908.74 = 60,423.30/x
  3. Step 3: Cross multiply
    105,731.46x = 145,908.74 × 60,423.30
  4. Step 4: Simplify right side
    105,731.46x = 8,816,287,720.70
  5. Step 5: Solve for x
    x = 8,816,287,720.70/105,731.46
  6. Step 6: Final answer
    x = 83,383.77

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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.