Home / 148,671.18-205,166.40-80,688.20

Finding the Fourth Proportional to 148,671.18, 205,166.40 and 80,688.20

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Solution

The fourth proportional to 148,671.18, 205,166.40 and 80,688.20 is: 111,349.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,671.18 : 205,166.40 = 80,688.20 : x
  2. Step 2: Convert to fraction form
    148,671.18/205,166.40 = 80,688.20/x
  3. Step 3: Cross multiply
    148,671.18x = 205,166.40 × 80,688.20
  4. Step 4: Simplify right side
    148,671.18x = 16,554,507,516.48
  5. Step 5: Solve for x
    x = 16,554,507,516.48/148,671.18
  6. Step 6: Final answer
    x = 111,349.81

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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.