Home / 91,029.80-136,544.70-83,426.60

Finding the Fourth Proportional to 91,029.80, 136,544.70 and 83,426.60

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Solution

The fourth proportional to 91,029.80, 136,544.70 and 83,426.60 is: 125,139.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,029.80 : 136,544.70 = 83,426.60 : x
  2. Step 2: Convert to fraction form
    91,029.80/136,544.70 = 83,426.60/x
  3. Step 3: Cross multiply
    91,029.80x = 136,544.70 × 83,426.60
  4. Step 4: Simplify right side
    91,029.80x = 11,391,460,069.02
  5. Step 5: Solve for x
    x = 11,391,460,069.02/91,029.80
  6. Step 6: Final answer
    x = 125,139.90

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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.