Home / 124,332,990.80-186,300,420.60-78,813,323.60

Finding the Fourth Proportional to 124,332,990.80, 186,300,420.60 and 78,813,323.60

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Solution

The fourth proportional to 124,332,990.80, 186,300,420.60 and 78,813,323.60 is: 118,093,799.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,332,990.80 : 186,300,420.60 = 78,813,323.60 : x
  2. Step 2: Convert to fraction form
    124,332,990.80/186,300,420.60 = 78,813,323.60/x
  3. Step 3: Cross multiply
    124,332,990.80x = 186,300,420.60 × 78,813,323.60
  4. Step 4: Simplify right side
    124,332,990.80x = 14,682,955,335,563,904
  5. Step 5: Solve for x
    x = 14,682,955,335,563,904/124,332,990.80
  6. Step 6: Final answer
    x = 118,093,799.89

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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.