Home / 140,342,808.32-210,103,712.46-81,871,701.20

Finding the Fourth Proportional to 140,342,808.32, 210,103,712.46 and 81,871,701.20

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Solution

The fourth proportional to 140,342,808.32, 210,103,712.46 and 81,871,701.20 is: 122,568,078.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,342,808.32 : 210,103,712.46 = 81,871,701.20 : x
  2. Step 2: Convert to fraction form
    140,342,808.32/210,103,712.46 = 81,871,701.20/x
  3. Step 3: Cross multiply
    140,342,808.32x = 210,103,712.46 × 81,871,701.20
  4. Step 4: Simplify right side
    140,342,808.32x = 17,201,548,367,535,838
  5. Step 5: Solve for x
    x = 17,201,548,367,535,838/140,342,808.32
  6. Step 6: Final answer
    x = 122,568,078.65

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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.