Home / 103,712.10-143,102.61-61,277.82

Finding the Fourth Proportional to 103,712.10, 143,102.61 and 61,277.82

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Solution

The fourth proportional to 103,712.10, 143,102.61 and 61,277.82 is: 84,551.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,712.10 : 143,102.61 = 61,277.82 : x
  2. Step 2: Convert to fraction form
    103,712.10/143,102.61 = 61,277.82/x
  3. Step 3: Cross multiply
    103,712.10x = 143,102.61 × 61,277.82
  4. Step 4: Simplify right side
    103,712.10x = 8,769,015,977.11
  5. Step 5: Solve for x
    x = 8,769,015,977.11/103,712.10
  6. Step 6: Final answer
    x = 84,551.52

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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.