Home / 123,420.35-170,318.81-69,705.20

Finding the Fourth Proportional to 123,420.35, 170,318.81 and 69,705.20

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Solution

The fourth proportional to 123,420.35, 170,318.81 and 69,705.20 is: 96,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,420.35 : 170,318.81 = 69,705.20 : x
  2. Step 2: Convert to fraction form
    123,420.35/170,318.81 = 69,705.20/x
  3. Step 3: Cross multiply
    123,420.35x = 170,318.81 × 69,705.20
  4. Step 4: Simplify right side
    123,420.35x = 11,872,105,514.69
  5. Step 5: Solve for x
    x = 11,872,105,514.69/123,420.35
  6. Step 6: Final answer
    x = 96,192.45

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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.