Home / 121,954.11-182,985.71-77,569.35

Finding the Fourth Proportional to 121,954.11, 182,985.71 and 77,569.35

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Solution

The fourth proportional to 121,954.11, 182,985.71 and 77,569.35 is: 116,388.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,954.11 : 182,985.71 = 77,569.35 : x
  2. Step 2: Convert to fraction form
    121,954.11/182,985.71 = 77,569.35/x
  3. Step 3: Cross multiply
    121,954.11x = 182,985.71 × 77,569.35
  4. Step 4: Simplify right side
    121,954.11x = 14,194,082,196.14
  5. Step 5: Solve for x
    x = 14,194,082,196.14/121,954.11
  6. Step 6: Final answer
    x = 116,388.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.