Home / 105,334.40-158,001.60-66,012.80

Finding the Fourth Proportional to 105,334.40, 158,001.60 and 66,012.80

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Solution

The fourth proportional to 105,334.40, 158,001.60 and 66,012.80 is: 99,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,334.40 : 158,001.60 = 66,012.80 : x
  2. Step 2: Convert to fraction form
    105,334.40/158,001.60 = 66,012.80/x
  3. Step 3: Cross multiply
    105,334.40x = 158,001.60 × 66,012.80
  4. Step 4: Simplify right side
    105,334.40x = 10,430,128,020.48
  5. Step 5: Solve for x
    x = 10,430,128,020.48/105,334.40
  6. Step 6: Final answer
    x = 99,019.20

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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.