Home / 145,146.36-200,307.10-80,616.64

Finding the Fourth Proportional to 145,146.36, 200,307.10 and 80,616.64

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Solution

The fourth proportional to 145,146.36, 200,307.10 and 80,616.64 is: 111,253.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,146.36 : 200,307.10 = 80,616.64 : x
  2. Step 2: Convert to fraction form
    145,146.36/200,307.10 = 80,616.64/x
  3. Step 3: Cross multiply
    145,146.36x = 200,307.10 × 80,616.64
  4. Step 4: Simplify right side
    145,146.36x = 16,148,085,370.14
  5. Step 5: Solve for x
    x = 16,148,085,370.14/145,146.36
  6. Step 6: Final answer
    x = 111,253.81

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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.