Home / 134,739.70-185,945.40-74,312.20

Finding the Fourth Proportional to 134,739.70, 185,945.40 and 74,312.20

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Solution

The fourth proportional to 134,739.70, 185,945.40 and 74,312.20 is: 102,553.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,739.70 : 185,945.40 = 74,312.20 : x
  2. Step 2: Convert to fraction form
    134,739.70/185,945.40 = 74,312.20/x
  3. Step 3: Cross multiply
    134,739.70x = 185,945.40 × 74,312.20
  4. Step 4: Simplify right side
    134,739.70x = 13,818,011,753.88
  5. Step 5: Solve for x
    x = 13,818,011,753.88/134,739.70
  6. Step 6: Final answer
    x = 102,553.38

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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.