Home / 145,718.72-218,424.93-66,768.02

Finding the Fourth Proportional to 145,718.72, 218,424.93 and 66,768.02

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Solution

The fourth proportional to 145,718.72, 218,424.93 and 66,768.02 is: 100,081.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,718.72 : 218,424.93 = 66,768.02 : x
  2. Step 2: Convert to fraction form
    145,718.72/218,424.93 = 66,768.02/x
  3. Step 3: Cross multiply
    145,718.72x = 218,424.93 × 66,768.02
  4. Step 4: Simplify right side
    145,718.72x = 14,583,800,094.74
  5. Step 5: Solve for x
    x = 14,583,800,094.74/145,718.72
  6. Step 6: Final answer
    x = 100,081.86

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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.