Home / 127,689.16-191,467.23-47,661.32

Finding the Fourth Proportional to 127,689.16, 191,467.23 and 47,661.32

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Solution

The fourth proportional to 127,689.16, 191,467.23 and 47,661.32 is: 71,467.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,689.16 : 191,467.23 = 47,661.32 : x
  2. Step 2: Convert to fraction form
    127,689.16/191,467.23 = 47,661.32/x
  3. Step 3: Cross multiply
    127,689.16x = 191,467.23 × 47,661.32
  4. Step 4: Simplify right side
    127,689.16x = 9,125,579,961.21
  5. Step 5: Solve for x
    x = 9,125,579,961.21/127,689.16
  6. Step 6: Final answer
    x = 71,467.15

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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.