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Finding the Fourth Proportional to 118,430.80, 163,443.82 and 67,445.69

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Solution

The fourth proportional to 118,430.80, 163,443.82 and 67,445.69 is: 93,080.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,430.80 : 163,443.82 = 67,445.69 : x
  2. Step 2: Convert to fraction form
    118,430.80/163,443.82 = 67,445.69/x
  3. Step 3: Cross multiply
    118,430.80x = 163,443.82 × 67,445.69
  4. Step 4: Simplify right side
    118,430.80x = 11,023,580,230.30
  5. Step 5: Solve for x
    x = 11,023,580,230.30/118,430.80
  6. Step 6: Final answer
    x = 93,080.35

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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.