Home / 129,509,489.80-194,364,973.10-90,393,829.93

Finding the Fourth Proportional to 129,509,489.80, 194,364,973.10 and 90,393,829.93

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Solution

The fourth proportional to 129,509,489.80, 194,364,973.10 and 90,393,829.93 is: 135,661,057.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,509,489.80 : 194,364,973.10 = 90,393,829.93 : x
  2. Step 2: Convert to fraction form
    129,509,489.80/194,364,973.10 = 90,393,829.93/x
  3. Step 3: Cross multiply
    129,509,489.80x = 194,364,973.10 × 90,393,829.93
  4. Step 4: Simplify right side
    129,509,489.80x = 17,569,394,322,750,426
  5. Step 5: Solve for x
    x = 17,569,394,322,750,426/129,509,489.80
  6. Step 6: Final answer
    x = 135,661,057.35

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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.