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Finding the Fourth Proportional to 105,074.60, 145,002.90 and 67,348.82

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Solution

The fourth proportional to 105,074.60, 145,002.90 and 67,348.82 is: 92,941.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,074.60 : 145,002.90 = 67,348.82 : x
  2. Step 2: Convert to fraction form
    105,074.60/145,002.90 = 67,348.82/x
  3. Step 3: Cross multiply
    105,074.60x = 145,002.90 × 67,348.82
  4. Step 4: Simplify right side
    105,074.60x = 9,765,774,211.58
  5. Step 5: Solve for x
    x = 9,765,774,211.58/105,074.60
  6. Step 6: Final answer
    x = 92,941.34

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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.