Home / 189,742.16-261,844.96-103,702.88

Finding the Fourth Proportional to 189,742.16, 261,844.96 and 103,702.88

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Solution

The fourth proportional to 189,742.16, 261,844.96 and 103,702.88 is: 143,110.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,742.16 : 261,844.96 = 103,702.88 : x
  2. Step 2: Convert to fraction form
    189,742.16/261,844.96 = 103,702.88/x
  3. Step 3: Cross multiply
    189,742.16x = 261,844.96 × 103,702.88
  4. Step 4: Simplify right side
    189,742.16x = 27,154,076,465.48
  5. Step 5: Solve for x
    x = 27,154,076,465.48/189,742.16
  6. Step 6: Final answer
    x = 143,110.40

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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.