Home / 122,021.32-183,312.96-86,570.66

Finding the Fourth Proportional to 122,021.32, 183,312.96 and 86,570.66

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Solution

The fourth proportional to 122,021.32, 183,312.96 and 86,570.66 is: 130,055.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,021.32 : 183,312.96 = 86,570.66 : x
  2. Step 2: Convert to fraction form
    122,021.32/183,312.96 = 86,570.66/x
  3. Step 3: Cross multiply
    122,021.32x = 183,312.96 × 86,570.66
  4. Step 4: Simplify right side
    122,021.32x = 15,869,523,933.75
  5. Step 5: Solve for x
    x = 15,869,523,933.75/122,021.32
  6. Step 6: Final answer
    x = 130,055.34

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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.