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Finding the Fourth Proportional to 103,422.60, 155,133.90 and 64,056.60

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Solution

The fourth proportional to 103,422.60, 155,133.90 and 64,056.60 is: 96,084.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,422.60 : 155,133.90 = 64,056.60 : x
  2. Step 2: Convert to fraction form
    103,422.60/155,133.90 = 64,056.60/x
  3. Step 3: Cross multiply
    103,422.60x = 155,133.90 × 64,056.60
  4. Step 4: Simplify right side
    103,422.60x = 9,937,350,178.74
  5. Step 5: Solve for x
    x = 9,937,350,178.74/103,422.60
  6. Step 6: Final answer
    x = 96,084.90

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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.