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Finding the Fourth Proportional to 155,661.40, 233,492.10 and 135,978.40

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Solution

The fourth proportional to 155,661.40, 233,492.10 and 135,978.40 is: 203,967.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,661.40 : 233,492.10 = 135,978.40 : x
  2. Step 2: Convert to fraction form
    155,661.40/233,492.10 = 135,978.40/x
  3. Step 3: Cross multiply
    155,661.40x = 233,492.10 × 135,978.40
  4. Step 4: Simplify right side
    155,661.40x = 31,749,882,170.64
  5. Step 5: Solve for x
    x = 31,749,882,170.64/155,661.40
  6. Step 6: Final answer
    x = 203,967.60

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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.