Home / 121,874,367.48-168,186,946.51-66,119,785.01

Finding the Fourth Proportional to 121,874,367.48, 168,186,946.51 and 66,119,785.01

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Solution

The fourth proportional to 121,874,367.48, 168,186,946.51 and 66,119,785.01 is: 91,245,476.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,874,367.48 : 168,186,946.51 = 66,119,785.01 : x
  2. Step 2: Convert to fraction form
    121,874,367.48/168,186,946.51 = 66,119,785.01/x
  3. Step 3: Cross multiply
    121,874,367.48x = 168,186,946.51 × 66,119,785.01
  4. Step 4: Simplify right side
    121,874,367.48x = 11,120,484,744,729,568
  5. Step 5: Solve for x
    x = 11,120,484,744,729,568/121,874,367.48
  6. Step 6: Final answer
    x = 91,245,476.59

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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.