Home / 140,341.15-193,664.75-76,679.20

Finding the Fourth Proportional to 140,341.15, 193,664.75 and 76,679.20

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Solution

The fourth proportional to 140,341.15, 193,664.75 and 76,679.20 is: 105,814.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,341.15 : 193,664.75 = 76,679.20 : x
  2. Step 2: Convert to fraction form
    140,341.15/193,664.75 = 76,679.20/x
  3. Step 3: Cross multiply
    140,341.15x = 193,664.75 × 76,679.20
  4. Step 4: Simplify right side
    140,341.15x = 14,850,058,098.20
  5. Step 5: Solve for x
    x = 14,850,058,098.20/140,341.15
  6. Step 6: Final answer
    x = 105,814.00

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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.