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Finding the Fourth Proportional to 135,690.57, 187,264.53 and 75,280.68

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Solution

The fourth proportional to 135,690.57, 187,264.53 and 75,280.68 is: 103,893.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,690.57 : 187,264.53 = 75,280.68 : x
  2. Step 2: Convert to fraction form
    135,690.57/187,264.53 = 75,280.68/x
  3. Step 3: Cross multiply
    135,690.57x = 187,264.53 × 75,280.68
  4. Step 4: Simplify right side
    135,690.57x = 14,097,401,158.28
  5. Step 5: Solve for x
    x = 14,097,401,158.28/135,690.57
  6. Step 6: Final answer
    x = 103,893.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.