Home / 100,101,200.40-150,151,800.60-78,602,115.60

Finding the Fourth Proportional to 100,101,200.40, 150,151,800.60 and 78,602,115.60

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Solution

The fourth proportional to 100,101,200.40, 150,151,800.60 and 78,602,115.60 is: 117,903,173.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,101,200.40 : 150,151,800.60 = 78,602,115.60 : x
  2. Step 2: Convert to fraction form
    100,101,200.40/150,151,800.60 = 78,602,115.60/x
  3. Step 3: Cross multiply
    100,101,200.40x = 150,151,800.60 × 78,602,115.60
  4. Step 4: Simplify right side
    100,101,200.40x = 11,802,249,188,309,348
  5. Step 5: Solve for x
    x = 11,802,249,188,309,348/100,101,200.40
  6. Step 6: Final answer
    x = 117,903,173.40

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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.