Home / 129,509,490.30-194,364,973.85-90,393,830.43

Finding the Fourth Proportional to 129,509,490.30, 194,364,973.85 and 90,393,830.43

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Solution

The fourth proportional to 129,509,490.30, 194,364,973.85 and 90,393,830.43 is: 135,661,058.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,509,490.30 : 194,364,973.85 = 90,393,830.43 : x
  2. Step 2: Convert to fraction form
    129,509,490.30/194,364,973.85 = 90,393,830.43/x
  3. Step 3: Cross multiply
    129,509,490.30x = 194,364,973.85 × 90,393,830.43
  4. Step 4: Simplify right side
    129,509,490.30x = 17,569,394,487,276,316
  5. Step 5: Solve for x
    x = 17,569,394,487,276,316/129,509,490.30
  6. Step 6: Final answer
    x = 135,661,058.09

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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.