Home / 209,609,146.31-289,261,807.73-121,555,425.13

Finding the Fourth Proportional to 209,609,146.31, 289,261,807.73 and 121,555,425.13

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Solution

The fourth proportional to 209,609,146.31, 289,261,807.73 and 121,555,425.13 is: 167,747,174.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,609,146.31 : 289,261,807.73 = 121,555,425.13 : x
  2. Step 2: Convert to fraction form
    209,609,146.31/289,261,807.73 = 121,555,425.13/x
  3. Step 3: Cross multiply
    209,609,146.31x = 289,261,807.73 × 121,555,425.13
  4. Step 4: Simplify right side
    209,609,146.31x = 35,161,342,011,617,368
  5. Step 5: Solve for x
    x = 35,161,342,011,617,368/209,609,146.31
  6. Step 6: Final answer
    x = 167,747,174.35

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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.