Home / 91,378.34-136,735.32-75,435.08

Finding the Fourth Proportional to 91,378.34, 136,735.32 and 75,435.08

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Solution

The fourth proportional to 91,378.34, 136,735.32 and 75,435.08 is: 112,878.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,378.34 : 136,735.32 = 75,435.08 : x
  2. Step 2: Convert to fraction form
    91,378.34/136,735.32 = 75,435.08/x
  3. Step 3: Cross multiply
    91,378.34x = 136,735.32 × 75,435.08
  4. Step 4: Simplify right side
    91,378.34x = 10,314,639,803.03
  5. Step 5: Solve for x
    x = 10,314,639,803.03/91,378.34
  6. Step 6: Final answer
    x = 112,878.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.