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Finding the Fourth Proportional to 149,916.60, 224,745.30 and 90,689.40

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Solution

The fourth proportional to 149,916.60, 224,745.30 and 90,689.40 is: 135,955.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,916.60 : 224,745.30 = 90,689.40 : x
  2. Step 2: Convert to fraction form
    149,916.60/224,745.30 = 90,689.40/x
  3. Step 3: Cross multiply
    149,916.60x = 224,745.30 × 90,689.40
  4. Step 4: Simplify right side
    149,916.60x = 20,382,016,409.82
  5. Step 5: Solve for x
    x = 20,382,016,409.82/149,916.60
  6. Step 6: Final answer
    x = 135,955.70

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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.