Home / 91,124.40-136,675.08-28,801.20

Finding the Fourth Proportional to 91,124.40, 136,675.08 and 28,801.20

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Solution

The fourth proportional to 91,124.40, 136,675.08 and 28,801.20 is: 43,198.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,124.40 : 136,675.08 = 28,801.20 : x
  2. Step 2: Convert to fraction form
    91,124.40/136,675.08 = 28,801.20/x
  3. Step 3: Cross multiply
    91,124.40x = 136,675.08 × 28,801.20
  4. Step 4: Simplify right side
    91,124.40x = 3,936,406,314.10
  5. Step 5: Solve for x
    x = 3,936,406,314.10/91,124.40
  6. Step 6: Final answer
    x = 43,198.16

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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.