Home / 140,142.15-193,393.98-76,478.58

Finding the Fourth Proportional to 140,142.15, 193,393.98 and 76,478.58

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Solution

The fourth proportional to 140,142.15, 193,393.98 and 76,478.58 is: 105,539.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,142.15 : 193,393.98 = 76,478.58 : x
  2. Step 2: Convert to fraction form
    140,142.15/193,393.98 = 76,478.58/x
  3. Step 3: Cross multiply
    140,142.15x = 193,393.98 × 76,478.58
  4. Step 4: Simplify right side
    140,142.15x = 14,790,496,970.95
  5. Step 5: Solve for x
    x = 14,790,496,970.95/140,142.15
  6. Step 6: Final answer
    x = 105,539.25

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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.