Home / 105,099.93-145,036.98-57,351.65

Finding the Fourth Proportional to 105,099.93, 145,036.98 and 57,351.65

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Solution

The fourth proportional to 105,099.93, 145,036.98 and 57,351.65 is: 79,144.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,099.93 : 145,036.98 = 57,351.65 : x
  2. Step 2: Convert to fraction form
    105,099.93/145,036.98 = 57,351.65/x
  3. Step 3: Cross multiply
    105,099.93x = 145,036.98 × 57,351.65
  4. Step 4: Simplify right side
    105,099.93x = 8,318,109,388.83
  5. Step 5: Solve for x
    x = 8,318,109,388.83/105,099.93
  6. Step 6: Final answer
    x = 79,144.77

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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.