Home / 123,219.42-170,030.16-90,971.16

Finding the Fourth Proportional to 123,219.42, 170,030.16 and 90,971.16

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Solution

The fourth proportional to 123,219.42, 170,030.16 and 90,971.16 is: 125,530.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,219.42 : 170,030.16 = 90,971.16 : x
  2. Step 2: Convert to fraction form
    123,219.42/170,030.16 = 90,971.16/x
  3. Step 3: Cross multiply
    123,219.42x = 170,030.16 × 90,971.16
  4. Step 4: Simplify right side
    123,219.42x = 15,467,840,890.19
  5. Step 5: Solve for x
    x = 15,467,840,890.19/123,219.42
  6. Step 6: Final answer
    x = 125,530.87

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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.