Home / 162,378.12-243,571.32-76,969.02

Finding the Fourth Proportional to 162,378.12, 243,571.32 and 76,969.02

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Solution

The fourth proportional to 162,378.12, 243,571.32 and 76,969.02 is: 115,455.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,378.12 : 243,571.32 = 76,969.02 : x
  2. Step 2: Convert to fraction form
    162,378.12/243,571.32 = 76,969.02/x
  3. Step 3: Cross multiply
    162,378.12x = 243,571.32 × 76,969.02
  4. Step 4: Simplify right side
    162,378.12x = 18,747,445,800.51
  5. Step 5: Solve for x
    x = 18,747,445,800.51/162,378.12
  6. Step 6: Final answer
    x = 115,455.49

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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.