Home / 128,952,012.20-193,428,018.30-103,442,844.20

Finding the Fourth Proportional to 128,952,012.20, 193,428,018.30 and 103,442,844.20

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Solution

The fourth proportional to 128,952,012.20, 193,428,018.30 and 103,442,844.20 is: 155,164,266.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,952,012.20 : 193,428,018.30 = 103,442,844.20 : x
  2. Step 2: Convert to fraction form
    128,952,012.20/193,428,018.30 = 103,442,844.20/x
  3. Step 3: Cross multiply
    128,952,012.20x = 193,428,018.30 × 103,442,844.20
  4. Step 4: Simplify right side
    128,952,012.20x = 20,008,744,360,921,652
  5. Step 5: Solve for x
    x = 20,008,744,360,921,652/128,952,012.20
  6. Step 6: Final answer
    x = 155,164,266.30

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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.