Home / 138,927.80-208,391.70-133,095.80

Finding the Fourth Proportional to 138,927.80, 208,391.70 and 133,095.80

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Solution

The fourth proportional to 138,927.80, 208,391.70 and 133,095.80 is: 199,643.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,927.80 : 208,391.70 = 133,095.80 : x
  2. Step 2: Convert to fraction form
    138,927.80/208,391.70 = 133,095.80/x
  3. Step 3: Cross multiply
    138,927.80x = 208,391.70 × 133,095.80
  4. Step 4: Simplify right side
    138,927.80x = 27,736,060,024.86
  5. Step 5: Solve for x
    x = 27,736,060,024.86/138,927.80
  6. Step 6: Final answer
    x = 199,643.70

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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.