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Finding the Fourth Proportional to 103,561.70, 155,342.55 and 97,729.70

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Solution

The fourth proportional to 103,561.70, 155,342.55 and 97,729.70 is: 146,594.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,561.70 : 155,342.55 = 97,729.70 : x
  2. Step 2: Convert to fraction form
    103,561.70/155,342.55 = 97,729.70/x
  3. Step 3: Cross multiply
    103,561.70x = 155,342.55 × 97,729.70
  4. Step 4: Simplify right side
    103,561.70x = 15,181,580,808.74
  5. Step 5: Solve for x
    x = 15,181,580,808.74/103,561.70
  6. Step 6: Final answer
    x = 146,594.55

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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.