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Finding the Fourth Proportional to 114,990.93, 158,687.23 and 64,689.93

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Solution

The fourth proportional to 114,990.93, 158,687.23 and 64,689.93 is: 89,271.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,990.93 : 158,687.23 = 64,689.93 : x
  2. Step 2: Convert to fraction form
    114,990.93/158,687.23 = 64,689.93/x
  3. Step 3: Cross multiply
    114,990.93x = 158,687.23 × 64,689.93
  4. Step 4: Simplify right side
    114,990.93x = 10,265,465,800.59
  5. Step 5: Solve for x
    x = 10,265,465,800.59/114,990.93
  6. Step 6: Final answer
    x = 89,271.96

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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.