Home / 99,136.28-136,804.38-56,693.72

Finding the Fourth Proportional to 99,136.28, 136,804.38 and 56,693.72

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Solution

The fourth proportional to 99,136.28, 136,804.38 and 56,693.72 is: 78,235.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,136.28 : 136,804.38 = 56,693.72 : x
  2. Step 2: Convert to fraction form
    99,136.28/136,804.38 = 56,693.72/x
  3. Step 3: Cross multiply
    99,136.28x = 136,804.38 × 56,693.72
  4. Step 4: Simplify right side
    99,136.28x = 7,755,949,214.49
  5. Step 5: Solve for x
    x = 7,755,949,214.49/99,136.28
  6. Step 6: Final answer
    x = 78,235.23

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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.