Home / 137,914.92-190,341.78-77,490.24

Finding the Fourth Proportional to 137,914.92, 190,341.78 and 77,490.24

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Solution

The fourth proportional to 137,914.92, 190,341.78 and 77,490.24 is: 106,947.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,914.92 : 190,341.78 = 77,490.24 : x
  2. Step 2: Convert to fraction form
    137,914.92/190,341.78 = 77,490.24/x
  3. Step 3: Cross multiply
    137,914.92x = 190,341.78 × 77,490.24
  4. Step 4: Simplify right side
    137,914.92x = 14,749,630,214.23
  5. Step 5: Solve for x
    x = 14,749,630,214.23/137,914.92
  6. Step 6: Final answer
    x = 106,947.31

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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.