Home / 145,515.49-200,808.40-85,121.89

Finding the Fourth Proportional to 145,515.49, 200,808.40 and 85,121.89

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Solution

The fourth proportional to 145,515.49, 200,808.40 and 85,121.89 is: 117,466.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,515.49 : 200,808.40 = 85,121.89 : x
  2. Step 2: Convert to fraction form
    145,515.49/200,808.40 = 85,121.89/x
  3. Step 3: Cross multiply
    145,515.49x = 200,808.40 × 85,121.89
  4. Step 4: Simplify right side
    145,515.49x = 17,093,190,535.88
  5. Step 5: Solve for x
    x = 17,093,190,535.88/145,515.49
  6. Step 6: Final answer
    x = 117,466.47

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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.