Home / 131,490.84-181,470.08-77,793.16

Finding the Fourth Proportional to 131,490.84, 181,470.08 and 77,793.16

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Solution

The fourth proportional to 131,490.84, 181,470.08 and 77,793.16 is: 107,362.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,490.84 : 181,470.08 = 77,793.16 : x
  2. Step 2: Convert to fraction form
    131,490.84/181,470.08 = 77,793.16/x
  3. Step 3: Cross multiply
    131,490.84x = 181,470.08 × 77,793.16
  4. Step 4: Simplify right side
    131,490.84x = 14,117,130,968.65
  5. Step 5: Solve for x
    x = 14,117,130,968.65/131,490.84
  6. Step 6: Final answer
    x = 107,362.09

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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.