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Finding the Fourth Proportional to 152,435.60, 228,264.60 and 121,331.60

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Solution

The fourth proportional to 152,435.60, 228,264.60 and 121,331.60 is: 181,687.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,435.60 : 228,264.60 = 121,331.60 : x
  2. Step 2: Convert to fraction form
    152,435.60/228,264.60 = 121,331.60/x
  3. Step 3: Cross multiply
    152,435.60x = 228,264.60 × 121,331.60
  4. Step 4: Simplify right side
    152,435.60x = 27,695,709,141.36
  5. Step 5: Solve for x
    x = 27,695,709,141.36/152,435.60
  6. Step 6: Final answer
    x = 181,687.93

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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.