Home / 137,788.86-190,146.96-77,358

Finding the Fourth Proportional to 137,788.86, 190,146.96 and 77,358

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Solution

The fourth proportional to 137,788.86, 190,146.96 and 77,358 is: 106,753.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,788.86 : 190,146.96 = 77,358 : x
  2. Step 2: Convert to fraction form
    137,788.86/190,146.96 = 77,358/x
  3. Step 3: Cross multiply
    137,788.86x = 190,146.96 × 77,358
  4. Step 4: Simplify right side
    137,788.86x = 14,709,388,531.68
  5. Step 5: Solve for x
    x = 14,709,388,531.68/137,788.86
  6. Step 6: Final answer
    x = 106,753.10

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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.