Home / 154,947.32-213,834.30-121,355

Finding the Fourth Proportional to 154,947.32, 213,834.30 and 121,355

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Solution

The fourth proportional to 154,947.32, 213,834.30 and 121,355 is: 167,475.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,947.32 : 213,834.30 = 121,355 : x
  2. Step 2: Convert to fraction form
    154,947.32/213,834.30 = 121,355/x
  3. Step 3: Cross multiply
    154,947.32x = 213,834.30 × 121,355
  4. Step 4: Simplify right side
    154,947.32x = 25,949,861,476.50
  5. Step 5: Solve for x
    x = 25,949,861,476.50/154,947.32
  6. Step 6: Final answer
    x = 167,475.38

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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.