Home / 103,630.34-143,027.02-65,410.69

Finding the Fourth Proportional to 103,630.34, 143,027.02 and 65,410.69

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Solution

The fourth proportional to 103,630.34, 143,027.02 and 65,410.69 is: 90,277.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,630.34 : 143,027.02 = 65,410.69 : x
  2. Step 2: Convert to fraction form
    103,630.34/143,027.02 = 65,410.69/x
  3. Step 3: Cross multiply
    103,630.34x = 143,027.02 × 65,410.69
  4. Step 4: Simplify right side
    103,630.34x = 9,355,496,066.84
  5. Step 5: Solve for x
    x = 9,355,496,066.84/103,630.34
  6. Step 6: Final answer
    x = 90,277.58

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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.