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Finding the Fourth Proportional to 148,901.70, 223,352.55 and 85,916.10

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Solution

The fourth proportional to 148,901.70, 223,352.55 and 85,916.10 is: 128,874.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,901.70 : 223,352.55 = 85,916.10 : x
  2. Step 2: Convert to fraction form
    148,901.70/223,352.55 = 85,916.10/x
  3. Step 3: Cross multiply
    148,901.70x = 223,352.55 × 85,916.10
  4. Step 4: Simplify right side
    148,901.70x = 19,189,580,021.06
  5. Step 5: Solve for x
    x = 19,189,580,021.06/148,901.70
  6. Step 6: Final answer
    x = 128,874.15

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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.