Home / 117,646.57-162,270.18-77,347.45

Finding the Fourth Proportional to 117,646.57, 162,270.18 and 77,347.45

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Solution

The fourth proportional to 117,646.57, 162,270.18 and 77,347.45 is: 106,685.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,646.57 : 162,270.18 = 77,347.45 : x
  2. Step 2: Convert to fraction form
    117,646.57/162,270.18 = 77,347.45/x
  3. Step 3: Cross multiply
    117,646.57x = 162,270.18 × 77,347.45
  4. Step 4: Simplify right side
    117,646.57x = 12,551,183,435.95
  5. Step 5: Solve for x
    x = 12,551,183,435.95/117,646.57
  6. Step 6: Final answer
    x = 106,685.51

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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.