Home / 201,681,288.21-278,334,430.91-112,379,160.46

Finding the Fourth Proportional to 201,681,288.21, 278,334,430.91 and 112,379,160.46

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Solution

The fourth proportional to 201,681,288.21, 278,334,430.91 and 112,379,160.46 is: 155,091,183.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,681,288.21 : 278,334,430.91 = 112,379,160.46 : x
  2. Step 2: Convert to fraction form
    201,681,288.21/278,334,430.91 = 112,379,160.46/x
  3. Step 3: Cross multiply
    201,681,288.21x = 278,334,430.91 × 112,379,160.46
  4. Step 4: Simplify right side
    201,681,288.21x = 31,278,989,672,464,632
  5. Step 5: Solve for x
    x = 31,278,989,672,464,632/201,681,288.21
  6. Step 6: Final answer
    x = 155,091,183.47

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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.