Home / 118,435.61-163,434.20-64,721.04

Finding the Fourth Proportional to 118,435.61, 163,434.20 and 64,721.04

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Solution

The fourth proportional to 118,435.61, 163,434.20 and 64,721.04 is: 89,311.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,435.61 : 163,434.20 = 64,721.04 : x
  2. Step 2: Convert to fraction form
    118,435.61/163,434.20 = 64,721.04/x
  3. Step 3: Cross multiply
    118,435.61x = 163,434.20 × 64,721.04
  4. Step 4: Simplify right side
    118,435.61x = 10,577,631,071.96
  5. Step 5: Solve for x
    x = 10,577,631,071.96/118,435.61
  6. Step 6: Final answer
    x = 89,311.24

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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.