Home / 157,406.12-217,195.78-90,325.16

Finding the Fourth Proportional to 157,406.12, 217,195.78 and 90,325.16

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Solution

The fourth proportional to 157,406.12, 217,195.78 and 90,325.16 is: 124,634.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,406.12 : 217,195.78 = 90,325.16 : x
  2. Step 2: Convert to fraction form
    157,406.12/217,195.78 = 90,325.16/x
  3. Step 3: Cross multiply
    157,406.12x = 217,195.78 × 90,325.16
  4. Step 4: Simplify right side
    157,406.12x = 19,618,243,579.82
  5. Step 5: Solve for x
    x = 19,618,243,579.82/157,406.12
  6. Step 6: Final answer
    x = 124,634.57

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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.