Home / 137,730.10-206,595.15-121,108.90

Finding the Fourth Proportional to 137,730.10, 206,595.15 and 121,108.90

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Solution

The fourth proportional to 137,730.10, 206,595.15 and 121,108.90 is: 181,663.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,730.10 : 206,595.15 = 121,108.90 : x
  2. Step 2: Convert to fraction form
    137,730.10/206,595.15 = 121,108.90/x
  3. Step 3: Cross multiply
    137,730.10x = 206,595.15 × 121,108.90
  4. Step 4: Simplify right side
    137,730.10x = 25,020,511,361.84
  5. Step 5: Solve for x
    x = 25,020,511,361.84/137,730.10
  6. Step 6: Final answer
    x = 181,663.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.