Home / 155,642,688.64-214,783,164-85,075,132.48

Finding the Fourth Proportional to 155,642,688.64, 214,783,164 and 85,075,132.48

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Solution

The fourth proportional to 155,642,688.64, 214,783,164 and 85,075,132.48 is: 117,401,635.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,642,688.64 : 214,783,164 = 85,075,132.48 : x
  2. Step 2: Convert to fraction form
    155,642,688.64/214,783,164 = 85,075,132.48/x
  3. Step 3: Cross multiply
    155,642,688.64x = 214,783,164 × 85,075,132.48
  4. Step 4: Simplify right side
    155,642,688.64x = 18,272,706,131,773,568
  5. Step 5: Solve for x
    x = 18,272,706,131,773,568/155,642,688.64
  6. Step 6: Final answer
    x = 117,401,635.06

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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.