Home / 99,681.57-137,558.86-54,359.64

Finding the Fourth Proportional to 99,681.57, 137,558.86 and 54,359.64

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Solution

The fourth proportional to 99,681.57, 137,558.86 and 54,359.64 is: 75,015.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,681.57 : 137,558.86 = 54,359.64 : x
  2. Step 2: Convert to fraction form
    99,681.57/137,558.86 = 54,359.64/x
  3. Step 3: Cross multiply
    99,681.57x = 137,558.86 × 54,359.64
  4. Step 4: Simplify right side
    99,681.57x = 7,477,649,972.51
  5. Step 5: Solve for x
    x = 7,477,649,972.51/99,681.57
  6. Step 6: Final answer
    x = 75,015.37

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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.