Home / 91,325.52-136,988.54-28,143.60

Finding the Fourth Proportional to 91,325.52, 136,988.54 and 28,143.60

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Solution

The fourth proportional to 91,325.52, 136,988.54 and 28,143.60 is: 42,215.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,325.52 : 136,988.54 = 28,143.60 : x
  2. Step 2: Convert to fraction form
    91,325.52/136,988.54 = 28,143.60/x
  3. Step 3: Cross multiply
    91,325.52x = 136,988.54 × 28,143.60
  4. Step 4: Simplify right side
    91,325.52x = 3,855,350,533.63
  5. Step 5: Solve for x
    x = 3,855,350,533.63/91,325.52
  6. Step 6: Final answer
    x = 42,215.48

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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.