Home / 139,812,145.60-209,718,218.40-91,439,204.80

Finding the Fourth Proportional to 139,812,145.60, 209,718,218.40 and 91,439,204.80

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Solution

The fourth proportional to 139,812,145.60, 209,718,218.40 and 91,439,204.80 is: 137,158,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,812,145.60 : 209,718,218.40 = 91,439,204.80 : x
  2. Step 2: Convert to fraction form
    139,812,145.60/209,718,218.40 = 91,439,204.80/x
  3. Step 3: Cross multiply
    139,812,145.60x = 209,718,218.40 × 91,439,204.80
  4. Step 4: Simplify right side
    139,812,145.60x = 19,176,467,122,568,728
  5. Step 5: Solve for x
    x = 19,176,467,122,568,728/139,812,145.60
  6. Step 6: Final answer
    x = 137,158,807.20

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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.