Home / 118,678.38-163,780.02-64,967.28

Finding the Fourth Proportional to 118,678.38, 163,780.02 and 64,967.28

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Solution

The fourth proportional to 118,678.38, 163,780.02 and 64,967.28 is: 89,656.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,678.38 : 163,780.02 = 64,967.28 : x
  2. Step 2: Convert to fraction form
    118,678.38/163,780.02 = 64,967.28/x
  3. Step 3: Cross multiply
    118,678.38x = 163,780.02 × 64,967.28
  4. Step 4: Simplify right side
    118,678.38x = 10,640,342,417.75
  5. Step 5: Solve for x
    x = 10,640,342,417.75/118,678.38
  6. Step 6: Final answer
    x = 89,656.96

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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.