Home / 128,960,187.20-193,440,280.80-112,164,027.20

Finding the Fourth Proportional to 128,960,187.20, 193,440,280.80 and 112,164,027.20

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Solution

The fourth proportional to 128,960,187.20, 193,440,280.80 and 112,164,027.20 is: 168,246,040.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,960,187.20 : 193,440,280.80 = 112,164,027.20 : x
  2. Step 2: Convert to fraction form
    128,960,187.20/193,440,280.80 = 112,164,027.20/x
  3. Step 3: Cross multiply
    128,960,187.20x = 193,440,280.80 × 112,164,027.20
  4. Step 4: Simplify right side
    128,960,187.20x = 21,697,040,917,226,840
  5. Step 5: Solve for x
    x = 21,697,040,917,226,840/128,960,187.20
  6. Step 6: Final answer
    x = 168,246,040.80

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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.