Home / 105,985.64-158,983.32-74,959.40

Finding the Fourth Proportional to 105,985.64, 158,983.32 and 74,959.40

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Solution

The fourth proportional to 105,985.64, 158,983.32 and 74,959.40 is: 112,442.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,985.64 : 158,983.32 = 74,959.40 : x
  2. Step 2: Convert to fraction form
    105,985.64/158,983.32 = 74,959.40/x
  3. Step 3: Cross multiply
    105,985.64x = 158,983.32 × 74,959.40
  4. Step 4: Simplify right side
    105,985.64x = 11,917,294,277.21
  5. Step 5: Solve for x
    x = 11,917,294,277.21/105,985.64
  6. Step 6: Final answer
    x = 112,442.54

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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.