Home / 153,944.64-212,447.88-90,285.12

Finding the Fourth Proportional to 153,944.64, 212,447.88 and 90,285.12

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Solution

The fourth proportional to 153,944.64, 212,447.88 and 90,285.12 is: 124,595.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,944.64 : 212,447.88 = 90,285.12 : x
  2. Step 2: Convert to fraction form
    153,944.64/212,447.88 = 90,285.12/x
  3. Step 3: Cross multiply
    153,944.64x = 212,447.88 × 90,285.12
  4. Step 4: Simplify right side
    153,944.64x = 19,180,882,339.55
  5. Step 5: Solve for x
    x = 19,180,882,339.55/153,944.64
  6. Step 6: Final answer
    x = 124,595.97

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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.