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Finding the Fourth Proportional to 148,673.70, 223,010.55 and 85,688.10

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Solution

The fourth proportional to 148,673.70, 223,010.55 and 85,688.10 is: 128,532.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,673.70 : 223,010.55 = 85,688.10 : x
  2. Step 2: Convert to fraction form
    148,673.70/223,010.55 = 85,688.10/x
  3. Step 3: Cross multiply
    148,673.70x = 223,010.55 × 85,688.10
  4. Step 4: Simplify right side
    148,673.70x = 19,109,350,309.46
  5. Step 5: Solve for x
    x = 19,109,350,309.46/148,673.70
  6. Step 6: Final answer
    x = 128,532.15

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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.