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Finding the Fourth Proportional to 134,536.63, 185,660.55 and 77,980.81

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Solution

The fourth proportional to 134,536.63, 185,660.55 and 77,980.81 is: 107,613.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,536.63 : 185,660.55 = 77,980.81 : x
  2. Step 2: Convert to fraction form
    134,536.63/185,660.55 = 77,980.81/x
  3. Step 3: Cross multiply
    134,536.63x = 185,660.55 × 77,980.81
  4. Step 4: Simplify right side
    134,536.63x = 14,477,960,074.05
  5. Step 5: Solve for x
    x = 14,477,960,074.05/134,536.63
  6. Step 6: Final answer
    x = 107,613.52

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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.