Home / 91,389.10-126,143.78-53,157.64

Finding the Fourth Proportional to 91,389.10, 126,143.78 and 53,157.64

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Solution

The fourth proportional to 91,389.10, 126,143.78 and 53,157.64 is: 73,373.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,389.10 : 126,143.78 = 53,157.64 : x
  2. Step 2: Convert to fraction form
    91,389.10/126,143.78 = 53,157.64/x
  3. Step 3: Cross multiply
    91,389.10x = 126,143.78 × 53,157.64
  4. Step 4: Simplify right side
    91,389.10x = 6,705,505,645.48
  5. Step 5: Solve for x
    x = 6,705,505,645.48/91,389.10
  6. Step 6: Final answer
    x = 73,373.14

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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.