Home / 212,107,078.64-318,160,987.02-66,551,810.32

Finding the Fourth Proportional to 212,107,078.64, 318,160,987.02 and 66,551,810.32

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Solution

The fourth proportional to 212,107,078.64, 318,160,987.02 and 66,551,810.32 is: 99,827,831.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,107,078.64 : 318,160,987.02 = 66,551,810.32 : x
  2. Step 2: Convert to fraction form
    212,107,078.64/318,160,987.02 = 66,551,810.32/x
  3. Step 3: Cross multiply
    212,107,078.64x = 318,160,987.02 × 66,551,810.32
  4. Step 4: Simplify right side
    212,107,078.64x = 21,174,189,659,379,020
  5. Step 5: Solve for x
    x = 21,174,189,659,379,020/212,107,078.64
  6. Step 6: Final answer
    x = 99,827,831.28

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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.