Home / 151,556.65-209,147.75-87,931.69

Finding the Fourth Proportional to 151,556.65, 209,147.75 and 87,931.69

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Solution

The fourth proportional to 151,556.65, 209,147.75 and 87,931.69 is: 121,345.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,556.65 : 209,147.75 = 87,931.69 : x
  2. Step 2: Convert to fraction form
    151,556.65/209,147.75 = 87,931.69/x
  3. Step 3: Cross multiply
    151,556.65x = 209,147.75 × 87,931.69
  4. Step 4: Simplify right side
    151,556.65x = 18,390,714,677.54
  5. Step 5: Solve for x
    x = 18,390,714,677.54/151,556.65
  6. Step 6: Final answer
    x = 121,345.48

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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.