Home / 129,402,659.27-178,590,993.52-72,889,265.25

Finding the Fourth Proportional to 129,402,659.27, 178,590,993.52 and 72,889,265.25

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Solution

The fourth proportional to 129,402,659.27, 178,590,993.52 and 72,889,265.25 is: 100,595,817.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,402,659.27 : 178,590,993.52 = 72,889,265.25 : x
  2. Step 2: Convert to fraction form
    129,402,659.27/178,590,993.52 = 72,889,265.25/x
  3. Step 3: Cross multiply
    129,402,659.27x = 178,590,993.52 × 72,889,265.25
  4. Step 4: Simplify right side
    129,402,659.27x = 13,017,366,297,289,614
  5. Step 5: Solve for x
    x = 13,017,366,297,289,614/129,402,659.27
  6. Step 6: Final answer
    x = 100,595,817.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.