Home / 100,728,088.40-151,092,132.60-78,809,099.60

Finding the Fourth Proportional to 100,728,088.40, 151,092,132.60 and 78,809,099.60

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Solution

The fourth proportional to 100,728,088.40, 151,092,132.60 and 78,809,099.60 is: 118,213,649.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,728,088.40 : 151,092,132.60 = 78,809,099.60 : x
  2. Step 2: Convert to fraction form
    100,728,088.40/151,092,132.60 = 78,809,099.60/x
  3. Step 3: Cross multiply
    100,728,088.40x = 151,092,132.60 × 78,809,099.60
  4. Step 4: Simplify right side
    100,728,088.40x = 11,907,434,926,849,806
  5. Step 5: Solve for x
    x = 11,907,434,926,849,806/100,728,088.40
  6. Step 6: Final answer
    x = 118,213,649.40

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1.5x scale

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.