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Finding the Fourth Proportional to 108,656.85, 149,995.53 and 68,429.67

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Solution

The fourth proportional to 108,656.85, 149,995.53 and 68,429.67 is: 94,463.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,656.85 : 149,995.53 = 68,429.67 : x
  2. Step 2: Convert to fraction form
    108,656.85/149,995.53 = 68,429.67/x
  3. Step 3: Cross multiply
    108,656.85x = 149,995.53 × 68,429.67
  4. Step 4: Simplify right side
    108,656.85x = 10,264,144,619.38
  5. Step 5: Solve for x
    x = 10,264,144,619.38/108,656.85
  6. Step 6: Final answer
    x = 94,463.85

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1.5x scale

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.