Home / 121,999,940.18-168,217,678.92-91,006,301.06

Finding the Fourth Proportional to 121,999,940.18, 168,217,678.92 and 91,006,301.06

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Solution

The fourth proportional to 121,999,940.18, 168,217,678.92 and 91,006,301.06 is: 125,482,592.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,999,940.18 : 168,217,678.92 = 91,006,301.06 : x
  2. Step 2: Convert to fraction form
    121,999,940.18/168,217,678.92 = 91,006,301.06/x
  3. Step 3: Cross multiply
    121,999,940.18x = 168,217,678.92 × 91,006,301.06
  4. Step 4: Simplify right side
    121,999,940.18x = 15,308,868,731,407,934
  5. Step 5: Solve for x
    x = 15,308,868,731,407,934/121,999,940.18
  6. Step 6: Final answer
    x = 125,482,592.11

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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.