Home / 145,442.13-200,707.47-80,911.05

Finding the Fourth Proportional to 145,442.13, 200,707.47 and 80,911.05

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Solution

The fourth proportional to 145,442.13, 200,707.47 and 80,911.05 is: 111,655.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,442.13 : 200,707.47 = 80,911.05 : x
  2. Step 2: Convert to fraction form
    145,442.13/200,707.47 = 80,911.05/x
  3. Step 3: Cross multiply
    145,442.13x = 200,707.47 × 80,911.05
  4. Step 4: Simplify right side
    145,442.13x = 16,239,452,140.54
  5. Step 5: Solve for x
    x = 16,239,452,140.54/145,442.13
  6. Step 6: Final answer
    x = 111,655.76

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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.