Home / 107,430.40-161,145.60-105,587.20

Finding the Fourth Proportional to 107,430.40, 161,145.60 and 105,587.20

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Solution

The fourth proportional to 107,430.40, 161,145.60 and 105,587.20 is: 158,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,430.40 : 161,145.60 = 105,587.20 : x
  2. Step 2: Convert to fraction form
    107,430.40/161,145.60 = 105,587.20/x
  3. Step 3: Cross multiply
    107,430.40x = 161,145.60 × 105,587.20
  4. Step 4: Simplify right side
    107,430.40x = 17,014,912,696.32
  5. Step 5: Solve for x
    x = 17,014,912,696.32/107,430.40
  6. Step 6: Final answer
    x = 158,380.80

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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.