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Finding the Fourth Proportional to 130,001.99, 194,859.86 and 85,004.79

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Solution

The fourth proportional to 130,001.99, 194,859.86 and 85,004.79 is: 127,413.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,001.99 : 194,859.86 = 85,004.79 : x
  2. Step 2: Convert to fraction form
    130,001.99/194,859.86 = 85,004.79/x
  3. Step 3: Cross multiply
    130,001.99x = 194,859.86 × 85,004.79
  4. Step 4: Simplify right side
    130,001.99x = 16,564,021,478.73
  5. Step 5: Solve for x
    x = 16,564,021,478.73/130,001.99
  6. Step 6: Final answer
    x = 127,413.60

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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.