Home / 141,802.25-212,502.87-78,650.19

Finding the Fourth Proportional to 141,802.25, 212,502.87 and 78,650.19

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Solution

The fourth proportional to 141,802.25, 212,502.87 and 78,650.19 is: 117,864.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,802.25 : 212,502.87 = 78,650.19 : x
  2. Step 2: Convert to fraction form
    141,802.25/212,502.87 = 78,650.19/x
  3. Step 3: Cross multiply
    141,802.25x = 212,502.87 × 78,650.19
  4. Step 4: Simplify right side
    141,802.25x = 16,713,391,101.05
  5. Step 5: Solve for x
    x = 16,713,391,101.05/141,802.25
  6. Step 6: Final answer
    x = 117,864.08

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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.