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Finding the Fourth Proportional to 103,628.96, 142,900.98 and 97,600.40

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Solution

The fourth proportional to 103,628.96, 142,900.98 and 97,600.40 is: 134,587.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628.96 : 142,900.98 = 97,600.40 : x
  2. Step 2: Convert to fraction form
    103,628.96/142,900.98 = 97,600.40/x
  3. Step 3: Cross multiply
    103,628.96x = 142,900.98 × 97,600.40
  4. Step 4: Simplify right side
    103,628.96x = 13,947,192,808.39
  5. Step 5: Solve for x
    x = 13,947,192,808.39/103,628.96
  6. Step 6: Final answer
    x = 134,587.79

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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.