Home / 138,312.37-190,889.26-77,894.82

Finding the Fourth Proportional to 138,312.37, 190,889.26 and 77,894.82

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Solution

The fourth proportional to 138,312.37, 190,889.26 and 77,894.82 is: 107,505.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,312.37 : 190,889.26 = 77,894.82 : x
  2. Step 2: Convert to fraction form
    138,312.37/190,889.26 = 77,894.82/x
  3. Step 3: Cross multiply
    138,312.37x = 190,889.26 × 77,894.82
  4. Step 4: Simplify right side
    138,312.37x = 14,869,284,889.77
  5. Step 5: Solve for x
    x = 14,869,284,889.77/138,312.37
  6. Step 6: Final answer
    x = 107,505.10

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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.