Home / 118,748.60-163,984.08-76,380.68

Finding the Fourth Proportional to 118,748.60, 163,984.08 and 76,380.68

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Solution

The fourth proportional to 118,748.60, 163,984.08 and 76,380.68 is: 105,476.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,748.60 : 163,984.08 = 76,380.68 : x
  2. Step 2: Convert to fraction form
    118,748.60/163,984.08 = 76,380.68/x
  3. Step 3: Cross multiply
    118,748.60x = 163,984.08 × 76,380.68
  4. Step 4: Simplify right side
    118,748.60x = 12,525,215,539.57
  5. Step 5: Solve for x
    x = 12,525,215,539.57/118,748.60
  6. Step 6: Final answer
    x = 105,476.74

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1.5x scale

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.