Home / 143,085,319.60-214,698,838.20-81,721,598.80

Finding the Fourth Proportional to 143,085,319.60, 214,698,838.20 and 81,721,598.80

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Solution

The fourth proportional to 143,085,319.60, 214,698,838.20 and 81,721,598.80 is: 122,622,868.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,085,319.60 : 214,698,838.20 = 81,721,598.80 : x
  2. Step 2: Convert to fraction form
    143,085,319.60/214,698,838.20 = 81,721,598.80/x
  3. Step 3: Cross multiply
    143,085,319.60x = 214,698,838.20 × 81,721,598.80
  4. Step 4: Simplify right side
    143,085,319.60x = 17,545,532,318,206,512
  5. Step 5: Solve for x
    x = 17,545,532,318,206,512/143,085,319.60
  6. Step 6: Final answer
    x = 122,622,868.42

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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.