Home / 100,838,356.60-151,257,534.90-66,400,979.80

Finding the Fourth Proportional to 100,838,356.60, 151,257,534.90 and 66,400,979.80

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Solution

The fourth proportional to 100,838,356.60, 151,257,534.90 and 66,400,979.80 is: 99,601,469.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,838,356.60 : 151,257,534.90 = 66,400,979.80 : x
  2. Step 2: Convert to fraction form
    100,838,356.60/151,257,534.90 = 66,400,979.80/x
  3. Step 3: Cross multiply
    100,838,356.60x = 151,257,534.90 × 66,400,979.80
  4. Step 4: Simplify right side
    100,838,356.60x = 10,043,648,519,492,694
  5. Step 5: Solve for x
    x = 10,043,648,519,492,694/100,838,356.60
  6. Step 6: Final answer
    x = 99,601,469.70

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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.