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Finding the Fourth Proportional to 118,740.08, 178,110.12 and 53,030

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Solution

The fourth proportional to 118,740.08, 178,110.12 and 53,030 is: 79,545

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,740.08 : 178,110.12 = 53,030 : x
  2. Step 2: Convert to fraction form
    118,740.08/178,110.12 = 53,030/x
  3. Step 3: Cross multiply
    118,740.08x = 178,110.12 × 53,030
  4. Step 4: Simplify right side
    118,740.08x = 9,445,179,663.60
  5. Step 5: Solve for x
    x = 9,445,179,663.60/118,740.08
  6. Step 6: Final answer
    x = 79,545

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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.