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Finding the Fourth Proportional to 106,689.98, 160,043.28 and 31,804.40

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Solution

The fourth proportional to 106,689.98, 160,043.28 and 31,804.40 is: 47,709.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,689.98 : 160,043.28 = 31,804.40 : x
  2. Step 2: Convert to fraction form
    106,689.98/160,043.28 = 31,804.40/x
  3. Step 3: Cross multiply
    106,689.98x = 160,043.28 × 31,804.40
  4. Step 4: Simplify right side
    106,689.98x = 5,090,080,494.43
  5. Step 5: Solve for x
    x = 5,090,080,494.43/106,689.98
  6. Step 6: Final answer
    x = 47,709.08

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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.