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Finding the Fourth Proportional to 189,878.32, 262,039.08 and 122,810.32

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Solution

The fourth proportional to 189,878.32, 262,039.08 and 122,810.32 is: 169,482.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,878.32 : 262,039.08 = 122,810.32 : x
  2. Step 2: Convert to fraction form
    189,878.32/262,039.08 = 122,810.32/x
  3. Step 3: Cross multiply
    189,878.32x = 262,039.08 × 122,810.32
  4. Step 4: Simplify right side
    189,878.32x = 32,181,103,267.31
  5. Step 5: Solve for x
    x = 32,181,103,267.31/189,878.32
  6. Step 6: Final answer
    x = 169,482.77

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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.