Home / 100,732,640.40-151,098,960.60-78,813,651.60

Finding the Fourth Proportional to 100,732,640.40, 151,098,960.60 and 78,813,651.60

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Solution

The fourth proportional to 100,732,640.40, 151,098,960.60 and 78,813,651.60 is: 118,220,477.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,732,640.40 : 151,098,960.60 = 78,813,651.60 : x
  2. Step 2: Convert to fraction form
    100,732,640.40/151,098,960.60 = 78,813,651.60/x
  3. Step 3: Cross multiply
    100,732,640.40x = 151,098,960.60 × 78,813,651.60
  4. Step 4: Simplify right side
    100,732,640.40x = 11,908,660,837,850,526
  5. Step 5: Solve for x
    x = 11,908,660,837,850,526/100,732,640.40
  6. Step 6: Final answer
    x = 118,220,477.40

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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.