Home / 126,372,972.60-189,559,458.90-71,764,457.40

Finding the Fourth Proportional to 126,372,972.60, 189,559,458.90 and 71,764,457.40

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Solution

The fourth proportional to 126,372,972.60, 189,559,458.90 and 71,764,457.40 is: 107,646,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,372,972.60 : 189,559,458.90 = 71,764,457.40 : x
  2. Step 2: Convert to fraction form
    126,372,972.60/189,559,458.90 = 71,764,457.40/x
  3. Step 3: Cross multiply
    126,372,972.60x = 189,559,458.90 × 71,764,457.40
  4. Step 4: Simplify right side
    126,372,972.60x = 13,603,631,712,996,102
  5. Step 5: Solve for x
    x = 13,603,631,712,996,102/126,372,972.60
  6. Step 6: Final answer
    x = 107,646,686.10

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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.