Home / 137,564,388.56-189,840,357.96-74,840,840.36

Finding the Fourth Proportional to 137,564,388.56, 189,840,357.96 and 74,840,840.36

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Solution

The fourth proportional to 137,564,388.56, 189,840,357.96 and 74,840,840.36 is: 103,281,176.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,564,388.56 : 189,840,357.96 = 74,840,840.36 : x
  2. Step 2: Convert to fraction form
    137,564,388.56/189,840,357.96 = 74,840,840.36/x
  3. Step 3: Cross multiply
    137,564,388.56x = 189,840,357.96 × 74,840,840.36
  4. Step 4: Simplify right side
    137,564,388.56x = 14,207,811,923,969,616
  5. Step 5: Solve for x
    x = 14,207,811,923,969,616/137,564,388.56
  6. Step 6: Final answer
    x = 103,281,176.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.