Home / 207,774.18-286,729.47-121,783.86

Finding the Fourth Proportional to 207,774.18, 286,729.47 and 121,783.86

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Solution

The fourth proportional to 207,774.18, 286,729.47 and 121,783.86 is: 168,062.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,774.18 : 286,729.47 = 121,783.86 : x
  2. Step 2: Convert to fraction form
    207,774.18/286,729.47 = 121,783.86/x
  3. Step 3: Cross multiply
    207,774.18x = 286,729.47 × 121,783.86
  4. Step 4: Simplify right side
    207,774.18x = 34,919,021,632.35
  5. Step 5: Solve for x
    x = 34,919,021,632.35/207,774.18
  6. Step 6: Final answer
    x = 168,062.37

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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.