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Finding the Fourth Proportional to 91,037.60, 136,658.80 and 70,352.80

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Solution

The fourth proportional to 91,037.60, 136,658.80 and 70,352.80 is: 105,608.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,037.60 : 136,658.80 = 70,352.80 : x
  2. Step 2: Convert to fraction form
    91,037.60/136,658.80 = 70,352.80/x
  3. Step 3: Cross multiply
    91,037.60x = 136,658.80 × 70,352.80
  4. Step 4: Simplify right side
    91,037.60x = 9,614,329,224.64
  5. Step 5: Solve for x
    x = 9,614,329,224.64/91,037.60
  6. Step 6: Final answer
    x = 105,608.33

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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.