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Finding the Fourth Proportional to 152,421.60, 228,243.60 and 121,317.60

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Solution

The fourth proportional to 152,421.60, 228,243.60 and 121,317.60 is: 181,666.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,421.60 : 228,243.60 = 121,317.60 : x
  2. Step 2: Convert to fraction form
    152,421.60/228,243.60 = 121,317.60/x
  3. Step 3: Cross multiply
    152,421.60x = 228,243.60 × 121,317.60
  4. Step 4: Simplify right side
    152,421.60x = 27,689,965,767.36
  5. Step 5: Solve for x
    x = 27,689,965,767.36/152,421.60
  6. Step 6: Final answer
    x = 181,666.94

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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.