Home / 153,928.18-212,452.53-90,299.38

Finding the Fourth Proportional to 153,928.18, 212,452.53 and 90,299.38

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Solution

The fourth proportional to 153,928.18, 212,452.53 and 90,299.38 is: 124,631.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,928.18 : 212,452.53 = 90,299.38 : x
  2. Step 2: Convert to fraction form
    153,928.18/212,452.53 = 90,299.38/x
  3. Step 3: Cross multiply
    153,928.18x = 212,452.53 × 90,299.38
  4. Step 4: Simplify right side
    153,928.18x = 19,184,331,738.43
  5. Step 5: Solve for x
    x = 19,184,331,738.43/153,928.18
  6. Step 6: Final answer
    x = 124,631.71

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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.