Home / 135,642,679.80-203,464,019.70-129,407,105.40

Finding the Fourth Proportional to 135,642,679.80, 203,464,019.70 and 129,407,105.40

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Solution

The fourth proportional to 135,642,679.80, 203,464,019.70 and 129,407,105.40 is: 194,110,658.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,642,679.80 : 203,464,019.70 = 129,407,105.40 : x
  2. Step 2: Convert to fraction form
    135,642,679.80/203,464,019.70 = 129,407,105.40/x
  3. Step 3: Cross multiply
    135,642,679.80x = 203,464,019.70 × 129,407,105.40
  4. Step 4: Simplify right side
    135,642,679.80x = 26,329,689,842,425,576
  5. Step 5: Solve for x
    x = 26,329,689,842,425,576/135,642,679.80
  6. Step 6: Final answer
    x = 194,110,658.10

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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.