Home / 209,557,422.95-289,204,528.11-121,474,160.87

Finding the Fourth Proportional to 209,557,422.95, 289,204,528.11 and 121,474,160.87

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Solution

The fourth proportional to 209,557,422.95, 289,204,528.11 and 121,474,160.87 is: 167,643,201.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,557,422.95 : 289,204,528.11 = 121,474,160.87 : x
  2. Step 2: Convert to fraction form
    209,557,422.95/289,204,528.11 = 121,474,160.87/x
  3. Step 3: Cross multiply
    209,557,422.95x = 289,204,528.11 × 121,474,160.87
  4. Step 4: Simplify right side
    209,557,422.95x = 35,130,877,370,065,024
  5. Step 5: Solve for x
    x = 35,130,877,370,065,024/209,557,422.95
  6. Step 6: Final answer
    x = 167,643,201.93

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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.