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Finding the Fourth Proportional to 140,051.60, 209,902.20 and 69,950.48

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Solution

The fourth proportional to 140,051.60, 209,902.20 and 69,950.48 is: 104,838.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,051.60 : 209,902.20 = 69,950.48 : x
  2. Step 2: Convert to fraction form
    140,051.60/209,902.20 = 69,950.48/x
  3. Step 3: Cross multiply
    140,051.60x = 209,902.20 × 69,950.48
  4. Step 4: Simplify right side
    140,051.60x = 14,682,759,643.06
  5. Step 5: Solve for x
    x = 14,682,759,643.06/140,051.60
  6. Step 6: Final answer
    x = 104,838.21

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1.5x scale

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.