Home / 134,712.21-185,901.71-74,285.40

Finding the Fourth Proportional to 134,712.21, 185,901.71 and 74,285.40

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Solution

The fourth proportional to 134,712.21, 185,901.71 and 74,285.40 is: 102,513.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,712.21 : 185,901.71 = 74,285.40 : x
  2. Step 2: Convert to fraction form
    134,712.21/185,901.71 = 74,285.40/x
  3. Step 3: Cross multiply
    134,712.21x = 185,901.71 × 74,285.40
  4. Step 4: Simplify right side
    134,712.21x = 13,809,782,516.61
  5. Step 5: Solve for x
    x = 13,809,782,516.61/134,712.21
  6. Step 6: Final answer
    x = 102,513.22

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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.