Home / 137,784.47-190,127.86-77,361.75

Finding the Fourth Proportional to 137,784.47, 190,127.86 and 77,361.75

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Solution

The fourth proportional to 137,784.47, 190,127.86 and 77,361.75 is: 106,750.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,784.47 : 190,127.86 = 77,361.75 : x
  2. Step 2: Convert to fraction form
    137,784.47/190,127.86 = 77,361.75/x
  3. Step 3: Cross multiply
    137,784.47x = 190,127.86 × 77,361.75
  4. Step 4: Simplify right side
    137,784.47x = 14,708,623,779.95
  5. Step 5: Solve for x
    x = 14,708,623,779.95/137,784.47
  6. Step 6: Final answer
    x = 106,750.96

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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.