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Finding the Fourth Proportional to 134,688.60, 201,935.70 and 87,967.80

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Solution

The fourth proportional to 134,688.60, 201,935.70 and 87,967.80 is: 131,888.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,688.60 : 201,935.70 = 87,967.80 : x
  2. Step 2: Convert to fraction form
    134,688.60/201,935.70 = 87,967.80/x
  3. Step 3: Cross multiply
    134,688.60x = 201,935.70 × 87,967.80
  4. Step 4: Simplify right side
    134,688.60x = 17,763,839,270.46
  5. Step 5: Solve for x
    x = 17,763,839,270.46/134,688.60
  6. Step 6: Final answer
    x = 131,888.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.