Home / 105,451.98-145,524.18-57,053.76

Finding the Fourth Proportional to 105,451.98, 145,524.18 and 57,053.76

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Solution

The fourth proportional to 105,451.98, 145,524.18 and 57,053.76 is: 78,734.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,451.98 : 145,524.18 = 57,053.76 : x
  2. Step 2: Convert to fraction form
    105,451.98/145,524.18 = 57,053.76/x
  3. Step 3: Cross multiply
    105,451.98x = 145,524.18 × 57,053.76
  4. Step 4: Simplify right side
    105,451.98x = 8,302,701,639.92
  5. Step 5: Solve for x
    x = 8,302,701,639.92/105,451.98
  6. Step 6: Final answer
    x = 78,734.43

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1.5x scale

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.