Home / 121,019,221.53-181,565,811.50-72,551,033.37

Finding the Fourth Proportional to 121,019,221.53, 181,565,811.50 and 72,551,033.37

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Solution

The fourth proportional to 121,019,221.53, 181,565,811.50 and 72,551,033.37 is: 108,848,719.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,019,221.53 : 181,565,811.50 = 72,551,033.37 : x
  2. Step 2: Convert to fraction form
    121,019,221.53/181,565,811.50 = 72,551,033.37/x
  3. Step 3: Cross multiply
    121,019,221.53x = 181,565,811.50 × 72,551,033.37
  4. Step 4: Simplify right side
    121,019,221.53x = 13,172,787,248,624,876
  5. Step 5: Solve for x
    x = 13,172,787,248,624,876/121,019,221.53
  6. Step 6: Final answer
    x = 108,848,719.09

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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.