Home / 189,463.32-261,442.08-121,359.60

Finding the Fourth Proportional to 189,463.32, 261,442.08 and 121,359.60

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Solution

The fourth proportional to 189,463.32, 261,442.08 and 121,359.60 is: 167,465.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,463.32 : 261,442.08 = 121,359.60 : x
  2. Step 2: Convert to fraction form
    189,463.32/261,442.08 = 121,359.60/x
  3. Step 3: Cross multiply
    189,463.32x = 261,442.08 × 121,359.60
  4. Step 4: Simplify right side
    189,463.32x = 31,728,506,251.97
  5. Step 5: Solve for x
    x = 31,728,506,251.97/189,463.32
  6. Step 6: Final answer
    x = 167,465.17

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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.