Home / 103,630.09-143,026.67-65,410.44

Finding the Fourth Proportional to 103,630.09, 143,026.67 and 65,410.44

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Solution

The fourth proportional to 103,630.09, 143,026.67 and 65,410.44 is: 90,277.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,630.09 : 143,026.67 = 65,410.44 : x
  2. Step 2: Convert to fraction form
    103,630.09/143,026.67 = 65,410.44/x
  3. Step 3: Cross multiply
    103,630.09x = 143,026.67 × 65,410.44
  4. Step 4: Simplify right side
    103,630.09x = 9,355,437,579.96
  5. Step 5: Solve for x
    x = 9,355,437,579.96/103,630.09
  6. Step 6: Final answer
    x = 90,277.23

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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.