Home / 122,076.10-183,114.15-86,646.70

Finding the Fourth Proportional to 122,076.10, 183,114.15 and 86,646.70

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Solution

The fourth proportional to 122,076.10, 183,114.15 and 86,646.70 is: 129,970.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,076.10 : 183,114.15 = 86,646.70 : x
  2. Step 2: Convert to fraction form
    122,076.10/183,114.15 = 86,646.70/x
  3. Step 3: Cross multiply
    122,076.10x = 183,114.15 × 86,646.70
  4. Step 4: Simplify right side
    122,076.10x = 15,866,236,820.81
  5. Step 5: Solve for x
    x = 15,866,236,820.81/122,076.10
  6. Step 6: Final answer
    x = 129,970.05

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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.