Home / 280,162.09-420,186.63-102,608.47

Finding the Fourth Proportional to 280,162.09, 420,186.63 and 102,608.47

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Solution

The fourth proportional to 280,162.09, 420,186.63 and 102,608.47 is: 153,892.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,162.09 : 420,186.63 = 102,608.47 : x
  2. Step 2: Convert to fraction form
    280,162.09/420,186.63 = 102,608.47/x
  3. Step 3: Cross multiply
    280,162.09x = 420,186.63 × 102,608.47
  4. Step 4: Simplify right side
    280,162.09x = 43,114,705,117.82
  5. Step 5: Solve for x
    x = 43,114,705,117.82/280,162.09
  6. Step 6: Final answer
    x = 153,892.01

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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.