Home / 105,021.05-157,484.19-30,124.20

Finding the Fourth Proportional to 105,021.05, 157,484.19 and 30,124.20

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Solution

The fourth proportional to 105,021.05, 157,484.19 and 30,124.20 is: 45,172.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,021.05 : 157,484.19 = 30,124.20 : x
  2. Step 2: Convert to fraction form
    105,021.05/157,484.19 = 30,124.20/x
  3. Step 3: Cross multiply
    105,021.05x = 157,484.19 × 30,124.20
  4. Step 4: Simplify right side
    105,021.05x = 4,744,085,236.40
  5. Step 5: Solve for x
    x = 4,744,085,236.40/105,021.05
  6. Step 6: Final answer
    x = 45,172.71

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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.