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Finding the Fourth Proportional to 152,805.80, 229,208.70 and 139,027.70

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Solution

The fourth proportional to 152,805.80, 229,208.70 and 139,027.70 is: 208,541.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,805.80 : 229,208.70 = 139,027.70 : x
  2. Step 2: Convert to fraction form
    152,805.80/229,208.70 = 139,027.70/x
  3. Step 3: Cross multiply
    152,805.80x = 229,208.70 × 139,027.70
  4. Step 4: Simplify right side
    152,805.80x = 31,866,358,380.99
  5. Step 5: Solve for x
    x = 31,866,358,380.99/152,805.80
  6. Step 6: Final answer
    x = 208,541.55

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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.