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Finding the Fourth Proportional to 172,980.64, 238,720 and 97,527.52

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Solution

The fourth proportional to 172,980.64, 238,720 and 97,527.52 is: 134,591.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,980.64 : 238,720 = 97,527.52 : x
  2. Step 2: Convert to fraction form
    172,980.64/238,720 = 97,527.52/x
  3. Step 3: Cross multiply
    172,980.64x = 238,720 × 97,527.52
  4. Step 4: Simplify right side
    172,980.64x = 23,281,769,574.40
  5. Step 5: Solve for x
    x = 23,281,769,574.40/172,980.64
  6. Step 6: Final answer
    x = 134,591.76

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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.