Home / 121,619.60-182,429.40-74,963.60

Finding the Fourth Proportional to 121,619.60, 182,429.40 and 74,963.60

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Solution

The fourth proportional to 121,619.60, 182,429.40 and 74,963.60 is: 112,445.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,619.60 : 182,429.40 = 74,963.60 : x
  2. Step 2: Convert to fraction form
    121,619.60/182,429.40 = 74,963.60/x
  3. Step 3: Cross multiply
    121,619.60x = 182,429.40 × 74,963.60
  4. Step 4: Simplify right side
    121,619.60x = 13,675,564,569.84
  5. Step 5: Solve for x
    x = 13,675,564,569.84/121,619.60
  6. Step 6: Final answer
    x = 112,445.40

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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.