Home / 158,020.40-237,451.80-86,999.60

Finding the Fourth Proportional to 158,020.40, 237,451.80 and 86,999.60

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Solution

The fourth proportional to 158,020.40, 237,451.80 and 86,999.60 is: 130,731.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,020.40 : 237,451.80 = 86,999.60 : x
  2. Step 2: Convert to fraction form
    158,020.40/237,451.80 = 86,999.60/x
  3. Step 3: Cross multiply
    158,020.40x = 237,451.80 × 86,999.60
  4. Step 4: Simplify right side
    158,020.40x = 20,658,211,619.28
  5. Step 5: Solve for x
    x = 20,658,211,619.28/158,020.40
  6. Step 6: Final answer
    x = 130,731.30

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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.