Home / 145,145.80-217,718.70-109,716.40

Finding the Fourth Proportional to 145,145.80, 217,718.70 and 109,716.40

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Solution

The fourth proportional to 145,145.80, 217,718.70 and 109,716.40 is: 164,574.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,145.80 : 217,718.70 = 109,716.40 : x
  2. Step 2: Convert to fraction form
    145,145.80/217,718.70 = 109,716.40/x
  3. Step 3: Cross multiply
    145,145.80x = 217,718.70 × 109,716.40
  4. Step 4: Simplify right side
    145,145.80x = 23,887,311,976.68
  5. Step 5: Solve for x
    x = 23,887,311,976.68/145,145.80
  6. Step 6: Final answer
    x = 164,574.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.