Home / 145,001.88-200,105.64-81,344.16

Finding the Fourth Proportional to 145,001.88, 200,105.64 and 81,344.16

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Solution

The fourth proportional to 145,001.88, 200,105.64 and 81,344.16 is: 112,256.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,001.88 : 200,105.64 = 81,344.16 : x
  2. Step 2: Convert to fraction form
    145,001.88/200,105.64 = 81,344.16/x
  3. Step 3: Cross multiply
    145,001.88x = 200,105.64 × 81,344.16
  4. Step 4: Simplify right side
    145,001.88x = 16,277,425,197.06
  5. Step 5: Solve for x
    x = 16,277,425,197.06/145,001.88
  6. Step 6: Final answer
    x = 112,256.65

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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.