Home / 145,213.09-200,307.12-91,404.70

Finding the Fourth Proportional to 145,213.09, 200,307.12 and 91,404.70

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Solution

The fourth proportional to 145,213.09, 200,307.12 and 91,404.70 is: 126,083.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,213.09 : 200,307.12 = 91,404.70 : x
  2. Step 2: Convert to fraction form
    145,213.09/200,307.12 = 91,404.70/x
  3. Step 3: Cross multiply
    145,213.09x = 200,307.12 × 91,404.70
  4. Step 4: Simplify right side
    145,213.09x = 18,309,012,211.46
  5. Step 5: Solve for x
    x = 18,309,012,211.46/145,213.09
  6. Step 6: Final answer
    x = 126,083.76

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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.