Home / 128,798,122.20-193,421,132.10-68,331,946.20

Finding the Fourth Proportional to 128,798,122.20, 193,421,132.10 and 68,331,946.20

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Solution

The fourth proportional to 128,798,122.20, 193,421,132.10 and 68,331,946.20 is: 102,616,732.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,798,122.20 : 193,421,132.10 = 68,331,946.20 : x
  2. Step 2: Convert to fraction form
    128,798,122.20/193,421,132.10 = 68,331,946.20/x
  3. Step 3: Cross multiply
    128,798,122.20x = 193,421,132.10 × 68,331,946.20
  4. Step 4: Simplify right side
    128,798,122.20x = 13,216,842,392,600,294
  5. Step 5: Solve for x
    x = 13,216,842,392,600,294/128,798,122.20
  6. Step 6: Final answer
    x = 102,616,732.04

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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.