Home / 148,867.50-205,440.40-81,799.50

Finding the Fourth Proportional to 148,867.50, 205,440.40 and 81,799.50

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Solution

The fourth proportional to 148,867.50, 205,440.40 and 81,799.50 is: 112,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,867.50 : 205,440.40 = 81,799.50 : x
  2. Step 2: Convert to fraction form
    148,867.50/205,440.40 = 81,799.50/x
  3. Step 3: Cross multiply
    148,867.50x = 205,440.40 × 81,799.50
  4. Step 4: Simplify right side
    148,867.50x = 16,804,921,999.80
  5. Step 5: Solve for x
    x = 16,804,921,999.80/148,867.50
  6. Step 6: Final answer
    x = 112,885.10

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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.