Home / 99,693.28-137,571.32-56,666.80

Finding the Fourth Proportional to 99,693.28, 137,571.32 and 56,666.80

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Solution

The fourth proportional to 99,693.28, 137,571.32 and 56,666.80 is: 78,197.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,693.28 : 137,571.32 = 56,666.80 : x
  2. Step 2: Convert to fraction form
    99,693.28/137,571.32 = 56,666.80/x
  3. Step 3: Cross multiply
    99,693.28x = 137,571.32 × 56,666.80
  4. Step 4: Simplify right side
    99,693.28x = 7,795,726,617.84
  5. Step 5: Solve for x
    x = 7,795,726,617.84/99,693.28
  6. Step 6: Final answer
    x = 78,197.11

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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.