Home / 121,029,721.27-166,998,172.57-72,141,698.23

Finding the Fourth Proportional to 121,029,721.27, 166,998,172.57 and 72,141,698.23

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Solution

The fourth proportional to 121,029,721.27, 166,998,172.57 and 72,141,698.23 is: 99,541,927.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,029,721.27 : 166,998,172.57 = 72,141,698.23 : x
  2. Step 2: Convert to fraction form
    121,029,721.27/166,998,172.57 = 72,141,698.23/x
  3. Step 3: Cross multiply
    121,029,721.27x = 166,998,172.57 × 72,141,698.23
  4. Step 4: Simplify right side
    121,029,721.27x = 12,047,531,770,506,404
  5. Step 5: Solve for x
    x = 12,047,531,770,506,404/121,029,721.27
  6. Step 6: Final answer
    x = 99,541,927.75

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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.