Home / 137,066.22-189,147.60-76,636.98

Finding the Fourth Proportional to 137,066.22, 189,147.60 and 76,636.98

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Solution

The fourth proportional to 137,066.22, 189,147.60 and 76,636.98 is: 105,756.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,066.22 : 189,147.60 = 76,636.98 : x
  2. Step 2: Convert to fraction form
    137,066.22/189,147.60 = 76,636.98/x
  3. Step 3: Cross multiply
    137,066.22x = 189,147.60 × 76,636.98
  4. Step 4: Simplify right side
    137,066.22x = 14,495,700,838.25
  5. Step 5: Solve for x
    x = 14,495,700,838.25/137,066.22
  6. Step 6: Final answer
    x = 105,756.92

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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.