Home / 145,192.03-200,367.41-80,665.47

Finding the Fourth Proportional to 145,192.03, 200,367.41 and 80,665.47

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Solution

The fourth proportional to 145,192.03, 200,367.41 and 80,665.47 is: 111,319.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,192.03 : 200,367.41 = 80,665.47 : x
  2. Step 2: Convert to fraction form
    145,192.03/200,367.41 = 80,665.47/x
  3. Step 3: Cross multiply
    145,192.03x = 200,367.41 × 80,665.47
  4. Step 4: Simplify right side
    145,192.03x = 16,162,730,897.01
  5. Step 5: Solve for x
    x = 16,162,730,897.01/145,192.03
  6. Step 6: Final answer
    x = 111,319.69

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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.