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Finding the Fourth Proportional to 91,282.60, 137,026.30 and 70,597.80

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Solution

The fourth proportional to 91,282.60, 137,026.30 and 70,597.80 is: 105,975.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,282.60 : 137,026.30 = 70,597.80 : x
  2. Step 2: Convert to fraction form
    91,282.60/137,026.30 = 70,597.80/x
  3. Step 3: Cross multiply
    91,282.60x = 137,026.30 × 70,597.80
  4. Step 4: Simplify right side
    91,282.60x = 9,673,755,322.14
  5. Step 5: Solve for x
    x = 9,673,755,322.14/91,282.60
  6. Step 6: Final answer
    x = 105,975.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.