Home / 429,001.35-643,502.03-109,152.60

Finding the Fourth Proportional to 429,001.35, 643,502.03 and 109,152.60

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Solution

The fourth proportional to 429,001.35, 643,502.03 and 109,152.60 is: 163,728.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,001.35 : 643,502.03 = 109,152.60 : x
  2. Step 2: Convert to fraction form
    429,001.35/643,502.03 = 109,152.60/x
  3. Step 3: Cross multiply
    429,001.35x = 643,502.03 × 109,152.60
  4. Step 4: Simplify right side
    429,001.35x = 70,239,919,134.02
  5. Step 5: Solve for x
    x = 70,239,919,134.02/429,001.35
  6. Step 6: Final answer
    x = 163,728.90

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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.