Home / 129,037,816.80-193,556,725.20-128,142,021.60

Finding the Fourth Proportional to 129,037,816.80, 193,556,725.20 and 128,142,021.60

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Solution

The fourth proportional to 129,037,816.80, 193,556,725.20 and 128,142,021.60 is: 192,213,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,037,816.80 : 193,556,725.20 = 128,142,021.60 : x
  2. Step 2: Convert to fraction form
    129,037,816.80/193,556,725.20 = 128,142,021.60/x
  3. Step 3: Cross multiply
    129,037,816.80x = 193,556,725.20 × 128,142,021.60
  4. Step 4: Simplify right side
    129,037,816.80x = 24,802,750,061,403,660
  5. Step 5: Solve for x
    x = 24,802,750,061,403,660/129,037,816.80
  6. Step 6: Final answer
    x = 192,213,032.40

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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.