Home / 137,878.37-190,264.84-77,451.56

Finding the Fourth Proportional to 137,878.37, 190,264.84 and 77,451.56

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Solution

The fourth proportional to 137,878.37, 190,264.84 and 77,451.56 is: 106,879.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,878.37 : 190,264.84 = 77,451.56 : x
  2. Step 2: Convert to fraction form
    137,878.37/190,264.84 = 77,451.56/x
  3. Step 3: Cross multiply
    137,878.37x = 190,264.84 × 77,451.56
  4. Step 4: Simplify right side
    137,878.37x = 14,736,307,526.20
  5. Step 5: Solve for x
    x = 14,736,307,526.20/137,878.37
  6. Step 6: Final answer
    x = 106,879.04

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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.