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Finding the Fourth Proportional to 189,485.81, 261,490.93 and 104,602.88

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Solution

The fourth proportional to 189,485.81, 261,490.93 and 104,602.88 is: 144,352.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,485.81 : 261,490.93 = 104,602.88 : x
  2. Step 2: Convert to fraction form
    189,485.81/261,490.93 = 104,602.88/x
  3. Step 3: Cross multiply
    189,485.81x = 261,490.93 × 104,602.88
  4. Step 4: Simplify right side
    189,485.81x = 27,352,702,802.92
  5. Step 5: Solve for x
    x = 27,352,702,802.92/189,485.81
  6. Step 6: Final answer
    x = 144,352.25

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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.