Home / 137,795.10-190,143.09-77,372.42

Finding the Fourth Proportional to 137,795.10, 190,143.09 and 77,372.42

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Solution

The fourth proportional to 137,795.10, 190,143.09 and 77,372.42 is: 106,765.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,795.10 : 190,143.09 = 77,372.42 : x
  2. Step 2: Convert to fraction form
    137,795.10/190,143.09 = 77,372.42/x
  3. Step 3: Cross multiply
    137,795.10x = 190,143.09 × 77,372.42
  4. Step 4: Simplify right side
    137,795.10x = 14,711,830,068.86
  5. Step 5: Solve for x
    x = 14,711,830,068.86/137,795.10
  6. Step 6: Final answer
    x = 106,765.99

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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.