Home / 103,640.60-155,576.10-64,242.20

Finding the Fourth Proportional to 103,640.60, 155,576.10 and 64,242.20

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Solution

The fourth proportional to 103,640.60, 155,576.10 and 64,242.20 is: 96,434.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.60 : 155,576.10 = 64,242.20 : x
  2. Step 2: Convert to fraction form
    103,640.60/155,576.10 = 64,242.20/x
  3. Step 3: Cross multiply
    103,640.60x = 155,576.10 × 64,242.20
  4. Step 4: Simplify right side
    103,640.60x = 9,994,550,931.42
  5. Step 5: Solve for x
    x = 9,994,550,931.42/103,640.60
  6. Step 6: Final answer
    x = 96,434.71

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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.