Home / 121,983,409.88-168,337,106.52-66,979,266.40

Finding the Fourth Proportional to 121,983,409.88, 168,337,106.52 and 66,979,266.40

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Solution

The fourth proportional to 121,983,409.88, 168,337,106.52 and 66,979,266.40 is: 92,431,388.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,983,409.88 : 168,337,106.52 = 66,979,266.40 : x
  2. Step 2: Convert to fraction form
    121,983,409.88/168,337,106.52 = 66,979,266.40/x
  3. Step 3: Cross multiply
    121,983,409.88x = 168,337,106.52 × 66,979,266.40
  4. Step 4: Simplify right side
    121,983,409.88x = 11,275,095,902,608,258
  5. Step 5: Solve for x
    x = 11,275,095,902,608,258/121,983,409.88
  6. Step 6: Final answer
    x = 92,431,388.12

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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.