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Finding the Fourth Proportional to 141,756.69, 212,561.21 and 66,856.71

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Solution

The fourth proportional to 141,756.69, 212,561.21 and 66,856.71 is: 100,250.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,756.69 : 212,561.21 = 66,856.71 : x
  2. Step 2: Convert to fraction form
    141,756.69/212,561.21 = 66,856.71/x
  3. Step 3: Cross multiply
    141,756.69x = 212,561.21 × 66,856.71
  4. Step 4: Simplify right side
    141,756.69x = 14,211,142,839.94
  5. Step 5: Solve for x
    x = 14,211,142,839.94/141,756.69
  6. Step 6: Final answer
    x = 100,250.24

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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.