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Finding the Fourth Proportional to 159,348.86, 219,893.06 and 87,714.89

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Solution

The fourth proportional to 159,348.86, 219,893.06 and 87,714.89 is: 121,041.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,348.86 : 219,893.06 = 87,714.89 : x
  2. Step 2: Convert to fraction form
    159,348.86/219,893.06 = 87,714.89/x
  3. Step 3: Cross multiply
    159,348.86x = 219,893.06 × 87,714.89
  4. Step 4: Simplify right side
    159,348.86x = 19,287,894,031.62
  5. Step 5: Solve for x
    x = 19,287,894,031.62/159,348.86
  6. Step 6: Final answer
    x = 121,041.94

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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.