Home / 128,325,009.20-192,487,513.80-98,091,921.20

Finding the Fourth Proportional to 128,325,009.20, 192,487,513.80 and 98,091,921.20

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Solution

The fourth proportional to 128,325,009.20, 192,487,513.80 and 98,091,921.20 is: 147,137,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,325,009.20 : 192,487,513.80 = 98,091,921.20 : x
  2. Step 2: Convert to fraction form
    128,325,009.20/192,487,513.80 = 98,091,921.20/x
  3. Step 3: Cross multiply
    128,325,009.20x = 192,487,513.80 × 98,091,921.20
  4. Step 4: Simplify right side
    128,325,009.20x = 18,881,470,035,653,516
  5. Step 5: Solve for x
    x = 18,881,470,035,653,516/128,325,009.20
  6. Step 6: Final answer
    x = 147,137,881.80

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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.