Home / 103,945.72-143,445.09-56,199.06

Finding the Fourth Proportional to 103,945.72, 143,445.09 and 56,199.06

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Solution

The fourth proportional to 103,945.72, 143,445.09 and 56,199.06 is: 77,554.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,945.72 : 143,445.09 = 56,199.06 : x
  2. Step 2: Convert to fraction form
    103,945.72/143,445.09 = 56,199.06/x
  3. Step 3: Cross multiply
    103,945.72x = 143,445.09 × 56,199.06
  4. Step 4: Simplify right side
    103,945.72x = 8,061,479,219.62
  5. Step 5: Solve for x
    x = 8,061,479,219.62/103,945.72
  6. Step 6: Final answer
    x = 77,554.70

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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.