Home / 125,814,936.40-188,722,404.60-85,504,152.40

Finding the Fourth Proportional to 125,814,936.40, 188,722,404.60 and 85,504,152.40

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Solution

The fourth proportional to 125,814,936.40, 188,722,404.60 and 85,504,152.40 is: 128,256,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,814,936.40 : 188,722,404.60 = 85,504,152.40 : x
  2. Step 2: Convert to fraction form
    125,814,936.40/188,722,404.60 = 85,504,152.40/x
  3. Step 3: Cross multiply
    125,814,936.40x = 188,722,404.60 × 85,504,152.40
  4. Step 4: Simplify right side
    125,814,936.40x = 16,136,549,244,212,862
  5. Step 5: Solve for x
    x = 16,136,549,244,212,862/125,814,936.40
  6. Step 6: Final answer
    x = 128,256,228.60

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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.