Home / 137,955.42-190,378.35-77,528.61

Finding the Fourth Proportional to 137,955.42, 190,378.35 and 77,528.61

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Solution

The fourth proportional to 137,955.42, 190,378.35 and 77,528.61 is: 106,989.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,955.42 : 190,378.35 = 77,528.61 : x
  2. Step 2: Convert to fraction form
    137,955.42/190,378.35 = 77,528.61/x
  3. Step 3: Cross multiply
    137,955.42x = 190,378.35 × 77,528.61
  4. Step 4: Simplify right side
    137,955.42x = 14,759,768,849.59
  5. Step 5: Solve for x
    x = 14,759,768,849.59/137,955.42
  6. Step 6: Final answer
    x = 106,989.41

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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.