Home / 155,637,685.12-214,780,849.86-85,073,390.14

Finding the Fourth Proportional to 155,637,685.12, 214,780,849.86 and 85,073,390.14

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Solution

The fourth proportional to 155,637,685.12, 214,780,849.86 and 85,073,390.14 is: 117,401,739.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,637,685.12 : 214,780,849.86 = 85,073,390.14 : x
  2. Step 2: Convert to fraction form
    155,637,685.12/214,780,849.86 = 85,073,390.14/x
  3. Step 3: Cross multiply
    155,637,685.12x = 214,780,849.86 × 85,073,390.14
  4. Step 4: Simplify right side
    155,637,685.12x = 18,272,135,034,740,544
  5. Step 5: Solve for x
    x = 18,272,135,034,740,544/155,637,685.12
  6. Step 6: Final answer
    x = 117,401,739.95

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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.