Home / 190,780,049.20-286,207,398.60-81,605,009.20

Finding the Fourth Proportional to 190,780,049.20, 286,207,398.60 and 81,605,009.20

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Solution

The fourth proportional to 190,780,049.20, 286,207,398.60 and 81,605,009.20 is: 122,423,479.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,780,049.20 : 286,207,398.60 = 81,605,009.20 : x
  2. Step 2: Convert to fraction form
    190,780,049.20/286,207,398.60 = 81,605,009.20/x
  3. Step 3: Cross multiply
    190,780,049.20x = 286,207,398.60 × 81,605,009.20
  4. Step 4: Simplify right side
    190,780,049.20x = 23,355,957,395,861,068
  5. Step 5: Solve for x
    x = 23,355,957,395,861,068/190,780,049.20
  6. Step 6: Final answer
    x = 122,423,479.26

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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.