Home / 128,304,079.20-192,456,118.80-42,051,204.90

Finding the Fourth Proportional to 128,304,079.20, 192,456,118.80 and 42,051,204.90

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Solution

The fourth proportional to 128,304,079.20, 192,456,118.80 and 42,051,204.90 is: 63,076,807.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,079.20 : 192,456,118.80 = 42,051,204.90 : x
  2. Step 2: Convert to fraction form
    128,304,079.20/192,456,118.80 = 42,051,204.90/x
  3. Step 3: Cross multiply
    128,304,079.20x = 192,456,118.80 × 42,051,204.90
  4. Step 4: Simplify right side
    128,304,079.20x = 8,093,011,685,917,542
  5. Step 5: Solve for x
    x = 8,093,011,685,917,542/128,304,079.20
  6. Step 6: Final answer
    x = 63,076,807.35

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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.