Home / 118,686.64-163,787.76-64,971.68

Finding the Fourth Proportional to 118,686.64, 163,787.76 and 64,971.68

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Solution

The fourth proportional to 118,686.64, 163,787.76 and 64,971.68 is: 89,661.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,686.64 : 163,787.76 = 64,971.68 : x
  2. Step 2: Convert to fraction form
    118,686.64/163,787.76 = 64,971.68/x
  3. Step 3: Cross multiply
    118,686.64x = 163,787.76 × 64,971.68
  4. Step 4: Simplify right side
    118,686.64x = 10,641,565,930.64
  5. Step 5: Solve for x
    x = 10,641,565,930.64/118,686.64
  6. Step 6: Final answer
    x = 89,661.03

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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.