Home / 99,416.78-137,199.97-56,975.41

Finding the Fourth Proportional to 99,416.78, 137,199.97 and 56,975.41

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Solution

The fourth proportional to 99,416.78, 137,199.97 and 56,975.41 is: 78,628.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,416.78 : 137,199.97 = 56,975.41 : x
  2. Step 2: Convert to fraction form
    99,416.78/137,199.97 = 56,975.41/x
  3. Step 3: Cross multiply
    99,416.78x = 137,199.97 × 56,975.41
  4. Step 4: Simplify right side
    99,416.78x = 7,817,024,542.74
  5. Step 5: Solve for x
    x = 7,817,024,542.74/99,416.78
  6. Step 6: Final answer
    x = 78,628.82

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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.