Home / 138,440.00-191,047.28-74,777.80

Finding the Fourth Proportional to 138,440.00, 191,047.28 and 74,777.80

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Solution

The fourth proportional to 138,440.00, 191,047.28 and 74,777.80 is: 103,193.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,440.00 : 191,047.28 = 74,777.80 : x
  2. Step 2: Convert to fraction form
    138,440.00/191,047.28 = 74,777.80/x
  3. Step 3: Cross multiply
    138,440.00x = 191,047.28 × 74,777.80
  4. Step 4: Simplify right side
    138,440.00x = 14,286,095,595.53
  5. Step 5: Solve for x
    x = 14,286,095,595.53/138,440.00
  6. Step 6: Final answer
    x = 103,193.41

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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.