Home / 137,780.72-190,124.26-77,337.51

Finding the Fourth Proportional to 137,780.72, 190,124.26 and 77,337.51

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Solution

The fourth proportional to 137,780.72, 190,124.26 and 77,337.51 is: 106,718.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,780.72 : 190,124.26 = 77,337.51 : x
  2. Step 2: Convert to fraction form
    137,780.72/190,124.26 = 77,337.51/x
  3. Step 3: Cross multiply
    137,780.72x = 190,124.26 × 77,337.51
  4. Step 4: Simplify right side
    137,780.72x = 14,703,736,858.99
  5. Step 5: Solve for x
    x = 14,703,736,858.99/137,780.72
  6. Step 6: Final answer
    x = 106,718.39

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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.