Home / 118,782.14-178,002.70-71,416.58

Finding the Fourth Proportional to 118,782.14, 178,002.70 and 71,416.58

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Solution

The fourth proportional to 118,782.14, 178,002.70 and 71,416.58 is: 107,022.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,782.14 : 178,002.70 = 71,416.58 : x
  2. Step 2: Convert to fraction form
    118,782.14/178,002.70 = 71,416.58/x
  3. Step 3: Cross multiply
    118,782.14x = 178,002.70 × 71,416.58
  4. Step 4: Simplify right side
    118,782.14x = 12,712,342,996.21
  5. Step 5: Solve for x
    x = 12,712,342,996.21/118,782.14
  6. Step 6: Final answer
    x = 107,022.35

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1.5x scale

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.