Home / 221,405.16-305,545.86-125,925.60

Finding the Fourth Proportional to 221,405.16, 305,545.86 and 125,925.60

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Solution

The fourth proportional to 221,405.16, 305,545.86 and 125,925.60 is: 173,781.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,405.16 : 305,545.86 = 125,925.60 : x
  2. Step 2: Convert to fraction form
    221,405.16/305,545.86 = 125,925.60/x
  3. Step 3: Cross multiply
    221,405.16x = 305,545.86 × 125,925.60
  4. Step 4: Simplify right side
    221,405.16x = 38,476,045,748.02
  5. Step 5: Solve for x
    x = 38,476,045,748.02/221,405.16
  6. Step 6: Final answer
    x = 173,781.16

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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.