Home / 118,702.12-163,809.40-64,992.13

Finding the Fourth Proportional to 118,702.12, 163,809.40 and 64,992.13

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Solution

The fourth proportional to 118,702.12, 163,809.40 and 64,992.13 is: 89,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,702.12 : 163,809.40 = 64,992.13 : x
  2. Step 2: Convert to fraction form
    118,702.12/163,809.40 = 64,992.13/x
  3. Step 3: Cross multiply
    118,702.12x = 163,809.40 × 64,992.13
  4. Step 4: Simplify right side
    118,702.12x = 10,646,321,921.99
  5. Step 5: Solve for x
    x = 10,646,321,921.99/118,702.12
  6. Step 6: Final answer
    x = 89,689.40

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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.