Home / 99,351.72-137,102.68-56,339.10

Finding the Fourth Proportional to 99,351.72, 137,102.68 and 56,339.10

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Solution

The fourth proportional to 99,351.72, 137,102.68 and 56,339.10 is: 77,746.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,351.72 : 137,102.68 = 56,339.10 : x
  2. Step 2: Convert to fraction form
    99,351.72/137,102.68 = 56,339.10/x
  3. Step 3: Cross multiply
    99,351.72x = 137,102.68 × 56,339.10
  4. Step 4: Simplify right side
    99,351.72x = 7,724,240,631.58
  5. Step 5: Solve for x
    x = 7,724,240,631.58/99,351.72
  6. Step 6: Final answer
    x = 77,746.42

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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.