Home / 102,406.10-153,609.15-66,976.70

Finding the Fourth Proportional to 102,406.10, 153,609.15 and 66,976.70

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Solution

The fourth proportional to 102,406.10, 153,609.15 and 66,976.70 is: 100,465.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,406.10 : 153,609.15 = 66,976.70 : x
  2. Step 2: Convert to fraction form
    102,406.10/153,609.15 = 66,976.70/x
  3. Step 3: Cross multiply
    102,406.10x = 153,609.15 × 66,976.70
  4. Step 4: Simplify right side
    102,406.10x = 10,288,233,956.81
  5. Step 5: Solve for x
    x = 10,288,233,956.81/102,406.10
  6. Step 6: Final answer
    x = 100,465.05

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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.