Home / 145,839.74-201,284.96-85,406.85

Finding the Fourth Proportional to 145,839.74, 201,284.96 and 85,406.85

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Solution

The fourth proportional to 145,839.74, 201,284.96 and 85,406.85 is: 117,876.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,839.74 : 201,284.96 = 85,406.85 : x
  2. Step 2: Convert to fraction form
    145,839.74/201,284.96 = 85,406.85/x
  3. Step 3: Cross multiply
    145,839.74x = 201,284.96 × 85,406.85
  4. Step 4: Simplify right side
    145,839.74x = 17,191,113,958.94
  5. Step 5: Solve for x
    x = 17,191,113,958.94/145,839.74
  6. Step 6: Final answer
    x = 117,876.75

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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.