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Finding the Fourth Proportional to 200,023.40, 299,991.90 and 87,703.40

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Solution

The fourth proportional to 200,023.40, 299,991.90 and 87,703.40 is: 131,536.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,023.40 : 299,991.90 = 87,703.40 : x
  2. Step 2: Convert to fraction form
    200,023.40/299,991.90 = 87,703.40/x
  3. Step 3: Cross multiply
    200,023.40x = 299,991.90 × 87,703.40
  4. Step 4: Simplify right side
    200,023.40x = 26,310,309,602.46
  5. Step 5: Solve for x
    x = 26,310,309,602.46/200,023.40
  6. Step 6: Final answer
    x = 131,536.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.