Home / 105,104.79-157,703.49-55,172.61

Finding the Fourth Proportional to 105,104.79, 157,703.49 and 55,172.61

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Solution

The fourth proportional to 105,104.79, 157,703.49 and 55,172.61 is: 82,783.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,104.79 : 157,703.49 = 55,172.61 : x
  2. Step 2: Convert to fraction form
    105,104.79/157,703.49 = 55,172.61/x
  3. Step 3: Cross multiply
    105,104.79x = 157,703.49 × 55,172.61
  4. Step 4: Simplify right side
    105,104.79x = 8,700,913,149.41
  5. Step 5: Solve for x
    x = 8,700,913,149.41/105,104.79
  6. Step 6: Final answer
    x = 82,783.22

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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.