Home / 103,971.81-143,481.15-56,225.19

Finding the Fourth Proportional to 103,971.81, 143,481.15 and 56,225.19

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Solution

The fourth proportional to 103,971.81, 143,481.15 and 56,225.19 is: 77,590.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,971.81 : 143,481.15 = 56,225.19 : x
  2. Step 2: Convert to fraction form
    103,971.81/143,481.15 = 56,225.19/x
  3. Step 3: Cross multiply
    103,971.81x = 143,481.15 × 56,225.19
  4. Step 4: Simplify right side
    103,971.81x = 8,067,254,920.17
  5. Step 5: Solve for x
    x = 8,067,254,920.17/103,971.81
  6. Step 6: Final answer
    x = 77,590.79

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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.