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Finding the Fourth Proportional to 103,557.70, 155,336.55 and 97,725.70

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Solution

The fourth proportional to 103,557.70, 155,336.55 and 97,725.70 is: 146,588.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,557.70 : 155,336.55 = 97,725.70 : x
  2. Step 2: Convert to fraction form
    103,557.70/155,336.55 = 97,725.70/x
  3. Step 3: Cross multiply
    103,557.70x = 155,336.55 × 97,725.70
  4. Step 4: Simplify right side
    103,557.70x = 15,180,373,084.34
  5. Step 5: Solve for x
    x = 15,180,373,084.34/103,557.70
  6. Step 6: Final answer
    x = 146,588.55

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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.