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Finding the Fourth Proportional to 502,021.02, 753,031.52 and 128,044.02

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Solution

The fourth proportional to 502,021.02, 753,031.52 and 128,044.02 is: 192,066.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,021.02 : 753,031.52 = 128,044.02 : x
  2. Step 2: Convert to fraction form
    502,021.02/753,031.52 = 128,044.02/x
  3. Step 3: Cross multiply
    502,021.02x = 753,031.52 × 128,044.02
  4. Step 4: Simplify right side
    502,021.02x = 96,421,183,007.51
  5. Step 5: Solve for x
    x = 96,421,183,007.51/502,021.02
  6. Step 6: Final answer
    x = 192,066.03

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Similar ratio
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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.