Home / 137,783.53-190,130.75-77,342.50

Finding the Fourth Proportional to 137,783.53, 190,130.75 and 77,342.50

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Solution

The fourth proportional to 137,783.53, 190,130.75 and 77,342.50 is: 106,726.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,783.53 : 190,130.75 = 77,342.50 : x
  2. Step 2: Convert to fraction form
    137,783.53/190,130.75 = 77,342.50/x
  3. Step 3: Cross multiply
    137,783.53x = 190,130.75 × 77,342.50
  4. Step 4: Simplify right side
    137,783.53x = 14,705,187,531.88
  5. Step 5: Solve for x
    x = 14,705,187,531.88/137,783.53
  6. Step 6: Final answer
    x = 106,726.74

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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.