Home / 99,228.66-136,938-56,800.86

Finding the Fourth Proportional to 99,228.66, 136,938 and 56,800.86

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Solution

The fourth proportional to 99,228.66, 136,938 and 56,800.86 is: 78,386.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,228.66 : 136,938 = 56,800.86 : x
  2. Step 2: Convert to fraction form
    99,228.66/136,938 = 56,800.86/x
  3. Step 3: Cross multiply
    99,228.66x = 136,938 × 56,800.86
  4. Step 4: Simplify right side
    99,228.66x = 7,778,196,166.68
  5. Step 5: Solve for x
    x = 7,778,196,166.68/99,228.66
  6. Step 6: Final answer
    x = 78,386.59

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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.