Home / 134,438.81-185,505-77,839.25

Finding the Fourth Proportional to 134,438.81, 185,505 and 77,839.25

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Solution

The fourth proportional to 134,438.81, 185,505 and 77,839.25 is: 107,406.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,438.81 : 185,505 = 77,839.25 : x
  2. Step 2: Convert to fraction form
    134,438.81/185,505 = 77,839.25/x
  3. Step 3: Cross multiply
    134,438.81x = 185,505 × 77,839.25
  4. Step 4: Simplify right side
    134,438.81x = 14,439,570,071.25
  5. Step 5: Solve for x
    x = 14,439,570,071.25/134,438.81
  6. Step 6: Final answer
    x = 107,406.26

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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.