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Finding the Fourth Proportional to 126,128,602.80, 189,192,904.20 and 126,128,602.80

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Solution

The fourth proportional to 126,128,602.80, 189,192,904.20 and 126,128,602.80 is: 189,192,904.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,128,602.80 : 189,192,904.20 = 126,128,602.80 : x
  2. Step 2: Convert to fraction form
    126,128,602.80/189,192,904.20 = 126,128,602.80/x
  3. Step 3: Cross multiply
    126,128,602.80x = 189,192,904.20 × 126,128,602.80
  4. Step 4: Simplify right side
    126,128,602.80x = 23,862,636,666,420,248
  5. Step 5: Solve for x
    x = 23,862,636,666,420,248/126,128,602.80
  6. Step 6: Final answer
    x = 189,192,904.20

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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.