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Finding the Fourth Proportional to 152,639.90, 210,615.90 and 92,170.02

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Solution

The fourth proportional to 152,639.90, 210,615.90 and 92,170.02 is: 127,178.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,639.90 : 210,615.90 = 92,170.02 : x
  2. Step 2: Convert to fraction form
    152,639.90/210,615.90 = 92,170.02/x
  3. Step 3: Cross multiply
    152,639.90x = 210,615.90 × 92,170.02
  4. Step 4: Simplify right side
    152,639.90x = 19,412,471,715.32
  5. Step 5: Solve for x
    x = 19,412,471,715.32/152,639.90
  6. Step 6: Final answer
    x = 127,178.23

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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.