Home / 145,065.08-200,186.62-80,530.61

Finding the Fourth Proportional to 145,065.08, 200,186.62 and 80,530.61

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Solution

The fourth proportional to 145,065.08, 200,186.62 and 80,530.61 is: 111,130.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,065.08 : 200,186.62 = 80,530.61 : x
  2. Step 2: Convert to fraction form
    145,065.08/200,186.62 = 80,530.61/x
  3. Step 3: Cross multiply
    145,065.08x = 200,186.62 × 80,530.61
  4. Step 4: Simplify right side
    145,065.08x = 16,121,149,420.18
  5. Step 5: Solve for x
    x = 16,121,149,420.18/145,065.08
  6. Step 6: Final answer
    x = 111,130.46

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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.