Home / 129,509,488.80-194,364,971.60-90,393,828.93

Finding the Fourth Proportional to 129,509,488.80, 194,364,971.60 and 90,393,828.93

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Solution

The fourth proportional to 129,509,488.80, 194,364,971.60 and 90,393,828.93 is: 135,661,055.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,509,488.80 : 194,364,971.60 = 90,393,828.93 : x
  2. Step 2: Convert to fraction form
    129,509,488.80/194,364,971.60 = 90,393,828.93/x
  3. Step 3: Cross multiply
    129,509,488.80x = 194,364,971.60 × 90,393,828.93
  4. Step 4: Simplify right side
    129,509,488.80x = 17,569,393,992,342,740
  5. Step 5: Solve for x
    x = 17,569,393,992,342,740/129,509,488.80
  6. Step 6: Final answer
    x = 135,661,055.84

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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.