Home / 145,678.72-218,563.44-52,185.28

Finding the Fourth Proportional to 145,678.72, 218,563.44 and 52,185.28

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Solution

The fourth proportional to 145,678.72, 218,563.44 and 52,185.28 is: 78,294.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,678.72 : 218,563.44 = 52,185.28 : x
  2. Step 2: Convert to fraction form
    145,678.72/218,563.44 = 52,185.28/x
  3. Step 3: Cross multiply
    145,678.72x = 218,563.44 × 52,185.28
  4. Step 4: Simplify right side
    145,678.72x = 11,405,794,314.16
  5. Step 5: Solve for x
    x = 11,405,794,314.16/145,678.72
  6. Step 6: Final answer
    x = 78,294.17

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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.