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Finding the Fourth Proportional to 117,574.84, 162,159.40 and 77,329.92

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Solution

The fourth proportional to 117,574.84, 162,159.40 and 77,329.92 is: 106,653.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,574.84 : 162,159.40 = 77,329.92 : x
  2. Step 2: Convert to fraction form
    117,574.84/162,159.40 = 77,329.92/x
  3. Step 3: Cross multiply
    117,574.84x = 162,159.40 × 77,329.92
  4. Step 4: Simplify right side
    117,574.84x = 12,539,773,429.25
  5. Step 5: Solve for x
    x = 12,539,773,429.25/117,574.84
  6. Step 6: Final answer
    x = 106,653.54

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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.