Home / 218,972.61-302,181.93-118,370.61

Finding the Fourth Proportional to 218,972.61, 302,181.93 and 118,370.61

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Solution

The fourth proportional to 218,972.61, 302,181.93 and 118,370.61 is: 163,351.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,972.61 : 302,181.93 = 118,370.61 : x
  2. Step 2: Convert to fraction form
    218,972.61/302,181.93 = 118,370.61/x
  3. Step 3: Cross multiply
    218,972.61x = 302,181.93 × 118,370.61
  4. Step 4: Simplify right side
    218,972.61x = 35,769,459,385.08
  5. Step 5: Solve for x
    x = 35,769,459,385.08/218,972.61
  6. Step 6: Final answer
    x = 163,351.29

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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.