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Finding the Fourth Proportional to 145,670.55, 201,025.26 and 85,252.71

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Solution

The fourth proportional to 145,670.55, 201,025.26 and 85,252.71 is: 117,648.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,670.55 : 201,025.26 = 85,252.71 : x
  2. Step 2: Convert to fraction form
    145,670.55/201,025.26 = 85,252.71/x
  3. Step 3: Cross multiply
    145,670.55x = 201,025.26 × 85,252.71
  4. Step 4: Simplify right side
    145,670.55x = 17,137,948,193.45
  5. Step 5: Solve for x
    x = 17,137,948,193.45/145,670.55
  6. Step 6: Final answer
    x = 117,648.68

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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.