Home / 100,821.42-151,232.13-30,700.74

Finding the Fourth Proportional to 100,821.42, 151,232.13 and 30,700.74

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Solution

The fourth proportional to 100,821.42, 151,232.13 and 30,700.74 is: 46,051.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,821.42 : 151,232.13 = 30,700.74 : x
  2. Step 2: Convert to fraction form
    100,821.42/151,232.13 = 30,700.74/x
  3. Step 3: Cross multiply
    100,821.42x = 151,232.13 × 30,700.74
  4. Step 4: Simplify right side
    100,821.42x = 4,642,938,302.78
  5. Step 5: Solve for x
    x = 4,642,938,302.78/100,821.42
  6. Step 6: Final answer
    x = 46,051.11

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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.