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Finding the Fourth Proportional to 121,291,489.80, 181,813,231.80 and 59,786,051.40

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Solution

The fourth proportional to 121,291,489.80, 181,813,231.80 and 59,786,051.40 is: 89,617,954.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,291,489.80 : 181,813,231.80 = 59,786,051.40 : x
  2. Step 2: Convert to fraction form
    121,291,489.80/181,813,231.80 = 59,786,051.40/x
  3. Step 3: Cross multiply
    121,291,489.80x = 181,813,231.80 × 59,786,051.40
  4. Step 4: Simplify right side
    121,291,489.80x = 10,869,895,221,594,914
  5. Step 5: Solve for x
    x = 10,869,895,221,594,914/121,291,489.80
  6. Step 6: Final answer
    x = 89,617,954.56

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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.