Home / 145,026.72-200,138.76-108,663.60

Finding the Fourth Proportional to 145,026.72, 200,138.76 and 108,663.60

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Solution

The fourth proportional to 145,026.72, 200,138.76 and 108,663.60 is: 149,957.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,026.72 : 200,138.76 = 108,663.60 : x
  2. Step 2: Convert to fraction form
    145,026.72/200,138.76 = 108,663.60/x
  3. Step 3: Cross multiply
    145,026.72x = 200,138.76 × 108,663.60
  4. Step 4: Simplify right side
    145,026.72x = 21,747,798,161.14
  5. Step 5: Solve for x
    x = 21,747,798,161.14/145,026.72
  6. Step 6: Final answer
    x = 149,957.18

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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.