Home / 121,890.36-182,025.53-120,570.87

Finding the Fourth Proportional to 121,890.36, 182,025.53 and 120,570.87

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Solution

The fourth proportional to 121,890.36, 182,025.53 and 120,570.87 is: 180,055.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,890.36 : 182,025.53 = 120,570.87 : x
  2. Step 2: Convert to fraction form
    121,890.36/182,025.53 = 120,570.87/x
  3. Step 3: Cross multiply
    121,890.36x = 182,025.53 × 120,570.87
  4. Step 4: Simplify right side
    121,890.36x = 21,946,976,815.74
  5. Step 5: Solve for x
    x = 21,946,976,815.74/121,890.36
  6. Step 6: Final answer
    x = 180,055.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.