Home / 103,145.60-154,628.40-40,008.80

Finding the Fourth Proportional to 103,145.60, 154,628.40 and 40,008.80

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Solution

The fourth proportional to 103,145.60, 154,628.40 and 40,008.80 is: 59,978.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,145.60 : 154,628.40 = 40,008.80 : x
  2. Step 2: Convert to fraction form
    103,145.60/154,628.40 = 40,008.80/x
  3. Step 3: Cross multiply
    103,145.60x = 154,628.40 × 40,008.80
  4. Step 4: Simplify right side
    103,145.60x = 6,186,496,729.92
  5. Step 5: Solve for x
    x = 6,186,496,729.92/103,145.60
  6. Step 6: Final answer
    x = 59,978.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.