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Finding the Fourth Proportional to 152,893.80, 229,340.70 and 139,115.70

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Solution

The fourth proportional to 152,893.80, 229,340.70 and 139,115.70 is: 208,673.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,893.80 : 229,340.70 = 139,115.70 : x
  2. Step 2: Convert to fraction form
    152,893.80/229,340.70 = 139,115.70/x
  3. Step 3: Cross multiply
    152,893.80x = 229,340.70 × 139,115.70
  4. Step 4: Simplify right side
    152,893.80x = 31,904,892,018.99
  5. Step 5: Solve for x
    x = 31,904,892,018.99/152,893.80
  6. Step 6: Final answer
    x = 208,673.55

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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.