Home / 111,418,393.20-167,127,589.80-85,909,225.20

Finding the Fourth Proportional to 111,418,393.20, 167,127,589.80 and 85,909,225.20

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Solution

The fourth proportional to 111,418,393.20, 167,127,589.80 and 85,909,225.20 is: 128,863,837.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,418,393.20 : 167,127,589.80 = 85,909,225.20 : x
  2. Step 2: Convert to fraction form
    111,418,393.20/167,127,589.80 = 85,909,225.20/x
  3. Step 3: Cross multiply
    111,418,393.20x = 167,127,589.80 × 85,909,225.20
  4. Step 4: Simplify right side
    111,418,393.20x = 14,357,801,749,261,424
  5. Step 5: Solve for x
    x = 14,357,801,749,261,424/111,418,393.20
  6. Step 6: Final answer
    x = 128,863,837.80

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1.5x scale

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.