Home / 131,484.84-181,486.26-77,788.62

Finding the Fourth Proportional to 131,484.84, 181,486.26 and 77,788.62

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Solution

The fourth proportional to 131,484.84, 181,486.26 and 77,788.62 is: 107,370.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,484.84 : 181,486.26 = 77,788.62 : x
  2. Step 2: Convert to fraction form
    131,484.84/181,486.26 = 77,788.62/x
  3. Step 3: Cross multiply
    131,484.84x = 181,486.26 × 77,788.62
  4. Step 4: Simplify right side
    131,484.84x = 14,117,565,714.36
  5. Step 5: Solve for x
    x = 14,117,565,714.36/131,484.84
  6. Step 6: Final answer
    x = 107,370.29

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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.