Home / 118,699.37-163,805.17-64,987.79

Finding the Fourth Proportional to 118,699.37, 163,805.17 and 64,987.79

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Solution

The fourth proportional to 118,699.37, 163,805.17 and 64,987.79 is: 89,683.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,699.37 : 163,805.17 = 64,987.79 : x
  2. Step 2: Convert to fraction form
    118,699.37/163,805.17 = 64,987.79/x
  3. Step 3: Cross multiply
    118,699.37x = 163,805.17 × 64,987.79
  4. Step 4: Simplify right side
    118,699.37x = 10,645,335,988.87
  5. Step 5: Solve for x
    x = 10,645,335,988.87/118,699.37
  6. Step 6: Final answer
    x = 89,683.17

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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.