Home / 106,410.12-145,781.27-102,421.68

Finding the Fourth Proportional to 106,410.12, 145,781.27 and 102,421.68

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Solution

The fourth proportional to 106,410.12, 145,781.27 and 102,421.68 is: 140,317.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,410.12 : 145,781.27 = 102,421.68 : x
  2. Step 2: Convert to fraction form
    106,410.12/145,781.27 = 102,421.68/x
  3. Step 3: Cross multiply
    106,410.12x = 145,781.27 × 102,421.68
  4. Step 4: Simplify right side
    106,410.12x = 14,931,162,073.83
  5. Step 5: Solve for x
    x = 14,931,162,073.83/106,410.12
  6. Step 6: Final answer
    x = 140,317.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.