Home / 154,212.12-212,933.34-118,345.32

Finding the Fourth Proportional to 154,212.12, 212,933.34 and 118,345.32

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Solution

The fourth proportional to 154,212.12, 212,933.34 and 118,345.32 is: 163,409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,212.12 : 212,933.34 = 118,345.32 : x
  2. Step 2: Convert to fraction form
    154,212.12/212,933.34 = 118,345.32/x
  3. Step 3: Cross multiply
    154,212.12x = 212,933.34 × 118,345.32
  4. Step 4: Simplify right side
    154,212.12x = 25,199,664,260.97
  5. Step 5: Solve for x
    x = 25,199,664,260.97/154,212.12
  6. Step 6: Final answer
    x = 163,409.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.