Home / 148,740.72-205,259.64-81,672.24

Finding the Fourth Proportional to 148,740.72, 205,259.64 and 81,672.24

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Solution

The fourth proportional to 148,740.72, 205,259.64 and 81,672.24 is: 112,706.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,740.72 : 205,259.64 = 81,672.24 : x
  2. Step 2: Convert to fraction form
    148,740.72/205,259.64 = 81,672.24/x
  3. Step 3: Cross multiply
    148,740.72x = 205,259.64 × 81,672.24
  4. Step 4: Simplify right side
    148,740.72x = 16,764,014,580.39
  5. Step 5: Solve for x
    x = 16,764,014,580.39/148,740.72
  6. Step 6: Final answer
    x = 112,706.29

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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.