Home / 111,428,008.20-167,142,012.30-85,918,840.20

Finding the Fourth Proportional to 111,428,008.20, 167,142,012.30 and 85,918,840.20

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Solution

The fourth proportional to 111,428,008.20, 167,142,012.30 and 85,918,840.20 is: 128,878,260.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,428,008.20 : 167,142,012.30 = 85,918,840.20 : x
  2. Step 2: Convert to fraction form
    111,428,008.20/167,142,012.30 = 85,918,840.20/x
  3. Step 3: Cross multiply
    111,428,008.20x = 167,142,012.30 × 85,918,840.20
  4. Step 4: Simplify right side
    111,428,008.20x = 14,360,647,845,510,136
  5. Step 5: Solve for x
    x = 14,360,647,845,510,136/111,428,008.20
  6. Step 6: Final answer
    x = 128,878,260.30

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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.