Home / 201,916,918.78-278,665,020.30-119,437,275.58

Finding the Fourth Proportional to 201,916,918.78, 278,665,020.30 and 119,437,275.58

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Solution

The fourth proportional to 201,916,918.78, 278,665,020.30 and 119,437,275.58 is: 164,835,076.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,916,918.78 : 278,665,020.30 = 119,437,275.58 : x
  2. Step 2: Convert to fraction form
    201,916,918.78/278,665,020.30 = 119,437,275.58/x
  3. Step 3: Cross multiply
    201,916,918.78x = 278,665,020.30 × 119,437,275.58
  4. Step 4: Simplify right side
    201,916,918.78x = 33,282,990,824,077,396
  5. Step 5: Solve for x
    x = 33,282,990,824,077,396/201,916,918.78
  6. Step 6: Final answer
    x = 164,835,076.85

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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.