Home / 156,238,828.20-234,371,021.76-78,475,746.96

Finding the Fourth Proportional to 156,238,828.20, 234,371,021.76 and 78,475,746.96

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Solution

The fourth proportional to 156,238,828.20, 234,371,021.76 and 78,475,746.96 is: 117,720,039.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,238,828.20 : 234,371,021.76 = 78,475,746.96 : x
  2. Step 2: Convert to fraction form
    156,238,828.20/234,371,021.76 = 78,475,746.96/x
  3. Step 3: Cross multiply
    156,238,828.20x = 234,371,021.76 × 78,475,746.96
  4. Step 4: Simplify right side
    156,238,828.20x = 18,392,440,998,394,412
  5. Step 5: Solve for x
    x = 18,392,440,998,394,412/156,238,828.20
  6. Step 6: Final answer
    x = 117,720,039.32

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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.