Home / 118,539.40-163,588.78-64,821.24

Finding the Fourth Proportional to 118,539.40, 163,588.78 and 64,821.24

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Solution

The fourth proportional to 118,539.40, 163,588.78 and 64,821.24 is: 89,455.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,539.40 : 163,588.78 = 64,821.24 : x
  2. Step 2: Convert to fraction form
    118,539.40/163,588.78 = 64,821.24/x
  3. Step 3: Cross multiply
    118,539.40x = 163,588.78 × 64,821.24
  4. Step 4: Simplify right side
    118,539.40x = 10,604,027,569.69
  5. Step 5: Solve for x
    x = 10,604,027,569.69/118,539.40
  6. Step 6: Final answer
    x = 89,455.72

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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.