Home / 148,921.86-205,516.06-85,280.16

Finding the Fourth Proportional to 148,921.86, 205,516.06 and 85,280.16

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Solution

The fourth proportional to 148,921.86, 205,516.06 and 85,280.16 is: 117,688.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,921.86 : 205,516.06 = 85,280.16 : x
  2. Step 2: Convert to fraction form
    148,921.86/205,516.06 = 85,280.16/x
  3. Step 3: Cross multiply
    148,921.86x = 205,516.06 × 85,280.16
  4. Step 4: Simplify right side
    148,921.86x = 17,526,442,479.37
  5. Step 5: Solve for x
    x = 17,526,442,479.37/148,921.86
  6. Step 6: Final answer
    x = 117,688.85

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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.