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Finding the Fourth Proportional to 121,119,993.60, 181,679,990.40 and 121,119,993.60

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Solution

The fourth proportional to 121,119,993.60, 181,679,990.40 and 121,119,993.60 is: 181,679,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,119,993.60 : 181,679,990.40 = 121,119,993.60 : x
  2. Step 2: Convert to fraction form
    121,119,993.60/181,679,990.40 = 121,119,993.60/x
  3. Step 3: Cross multiply
    121,119,993.60x = 181,679,990.40 × 121,119,993.60
  4. Step 4: Simplify right side
    121,119,993.60x = 22,005,079,274,496,060
  5. Step 5: Solve for x
    x = 22,005,079,274,496,060/121,119,993.60
  6. Step 6: Final answer
    x = 181,679,990.40

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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.