Home / 144,730.40-217,095.60-85,632.80

Finding the Fourth Proportional to 144,730.40, 217,095.60 and 85,632.80

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Solution

The fourth proportional to 144,730.40, 217,095.60 and 85,632.80 is: 128,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,730.40 : 217,095.60 = 85,632.80 : x
  2. Step 2: Convert to fraction form
    144,730.40/217,095.60 = 85,632.80/x
  3. Step 3: Cross multiply
    144,730.40x = 217,095.60 × 85,632.80
  4. Step 4: Simplify right side
    144,730.40x = 18,590,504,095.68
  5. Step 5: Solve for x
    x = 18,590,504,095.68/144,730.40
  6. Step 6: Final answer
    x = 128,449.20

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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.