Home / 155,401,987.32-214,449,122.40-85,785,873.48

Finding the Fourth Proportional to 155,401,987.32, 214,449,122.40 and 85,785,873.48

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Solution

The fourth proportional to 155,401,987.32, 214,449,122.40 and 85,785,873.48 is: 118,381,402.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,401,987.32 : 214,449,122.40 = 85,785,873.48 : x
  2. Step 2: Convert to fraction form
    155,401,987.32/214,449,122.40 = 85,785,873.48/x
  3. Step 3: Cross multiply
    155,401,987.32x = 214,449,122.40 × 85,785,873.48
  4. Step 4: Simplify right side
    155,401,987.32x = 18,396,705,282,103,436
  5. Step 5: Solve for x
    x = 18,396,705,282,103,436/155,401,987.32
  6. Step 6: Final answer
    x = 118,381,402.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.