Home / 103,621.10-155,546.85-64,222.70

Finding the Fourth Proportional to 103,621.10, 155,546.85 and 64,222.70

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Solution

The fourth proportional to 103,621.10, 155,546.85 and 64,222.70 is: 96,405.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.10 : 155,546.85 = 64,222.70 : x
  2. Step 2: Convert to fraction form
    103,621.10/155,546.85 = 64,222.70/x
  3. Step 3: Cross multiply
    103,621.10x = 155,546.85 × 64,222.70
  4. Step 4: Simplify right side
    103,621.10x = 9,989,638,683.50
  5. Step 5: Solve for x
    x = 9,989,638,683.50/103,621.10
  6. Step 6: Final answer
    x = 96,405.45

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1.5x scale

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.