Home / 119,542.32-164,858.40-78,689.04

Finding the Fourth Proportional to 119,542.32, 164,858.40 and 78,689.04

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Solution

The fourth proportional to 119,542.32, 164,858.40 and 78,689.04 is: 108,518.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,542.32 : 164,858.40 = 78,689.04 : x
  2. Step 2: Convert to fraction form
    119,542.32/164,858.40 = 78,689.04/x
  3. Step 3: Cross multiply
    119,542.32x = 164,858.40 × 78,689.04
  4. Step 4: Simplify right side
    119,542.32x = 12,972,549,231.94
  5. Step 5: Solve for x
    x = 12,972,549,231.94/119,542.32
  6. Step 6: Final answer
    x = 108,518.47

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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.