Home / 104,139.81-143,712.66-56,393.15

Finding the Fourth Proportional to 104,139.81, 143,712.66 and 56,393.15

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Solution

The fourth proportional to 104,139.81, 143,712.66 and 56,393.15 is: 77,822.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,139.81 : 143,712.66 = 56,393.15 : x
  2. Step 2: Convert to fraction form
    104,139.81/143,712.66 = 56,393.15/x
  3. Step 3: Cross multiply
    104,139.81x = 143,712.66 × 56,393.15
  4. Step 4: Simplify right side
    104,139.81x = 8,104,409,085.19
  5. Step 5: Solve for x
    x = 8,104,409,085.19/104,139.81
  6. Step 6: Final answer
    x = 77,822.39

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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.