Home / 99,665.61-137,550.96-57,223.23

Finding the Fourth Proportional to 99,665.61, 137,550.96 and 57,223.23

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Solution

The fourth proportional to 99,665.61, 137,550.96 and 57,223.23 is: 78,975.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,665.61 : 137,550.96 = 57,223.23 : x
  2. Step 2: Convert to fraction form
    99,665.61/137,550.96 = 57,223.23/x
  3. Step 3: Cross multiply
    99,665.61x = 137,550.96 × 57,223.23
  4. Step 4: Simplify right side
    99,665.61x = 7,871,110,220.80
  5. Step 5: Solve for x
    x = 7,871,110,220.80/99,665.61
  6. Step 6: Final answer
    x = 78,975.19

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1.5x scale

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.