Home / 201,681,289.47-278,334,432.64-112,379,161.71

Finding the Fourth Proportional to 201,681,289.47, 278,334,432.64 and 112,379,161.71

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Solution

The fourth proportional to 201,681,289.47, 278,334,432.64 and 112,379,161.71 is: 155,091,185.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,681,289.47 : 278,334,432.64 = 112,379,161.71 : x
  2. Step 2: Convert to fraction form
    201,681,289.47/278,334,432.64 = 112,379,161.71/x
  3. Step 3: Cross multiply
    201,681,289.47x = 278,334,432.64 × 112,379,161.71
  4. Step 4: Simplify right side
    201,681,289.47x = 31,278,990,215,111,660
  5. Step 5: Solve for x
    x = 31,278,990,215,111,660/201,681,289.47
  6. Step 6: Final answer
    x = 155,091,185.19

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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.