Home / 143,532,097.20-215,298,145.80-85,994,751.60

Finding the Fourth Proportional to 143,532,097.20, 215,298,145.80 and 85,994,751.60

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Solution

The fourth proportional to 143,532,097.20, 215,298,145.80 and 85,994,751.60 is: 128,992,127.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,532,097.20 : 215,298,145.80 = 85,994,751.60 : x
  2. Step 2: Convert to fraction form
    143,532,097.20/215,298,145.80 = 85,994,751.60/x
  3. Step 3: Cross multiply
    143,532,097.20x = 215,298,145.80 × 85,994,751.60
  4. Step 4: Simplify right side
    143,532,097.20x = 18,514,510,568,011,584
  5. Step 5: Solve for x
    x = 18,514,510,568,011,584/143,532,097.20
  6. Step 6: Final answer
    x = 128,992,127.40

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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.