Home / 99,135.28-136,806.33-56,693.71

Finding the Fourth Proportional to 99,135.28, 136,806.33 and 56,693.71

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Solution

The fourth proportional to 99,135.28, 136,806.33 and 56,693.71 is: 78,237.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,135.28 : 136,806.33 = 56,693.71 : x
  2. Step 2: Convert to fraction form
    99,135.28/136,806.33 = 56,693.71/x
  3. Step 3: Cross multiply
    99,135.28x = 136,806.33 × 56,693.71
  4. Step 4: Simplify right side
    99,135.28x = 7,756,058,399.18
  5. Step 5: Solve for x
    x = 7,756,058,399.18/99,135.28
  6. Step 6: Final answer
    x = 78,237.12

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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.