Home / 121,039.02-166,992.84-86,554.62

Finding the Fourth Proportional to 121,039.02, 166,992.84 and 86,554.62

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Solution

The fourth proportional to 121,039.02, 166,992.84 and 86,554.62 is: 119,416.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,039.02 : 166,992.84 = 86,554.62 : x
  2. Step 2: Convert to fraction form
    121,039.02/166,992.84 = 86,554.62/x
  3. Step 3: Cross multiply
    121,039.02x = 166,992.84 × 86,554.62
  4. Step 4: Simplify right side
    121,039.02x = 14,454,001,808.92
  5. Step 5: Solve for x
    x = 14,454,001,808.92/121,039.02
  6. Step 6: Final answer
    x = 119,416.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.