Home / 138,141.37-190,374.51-121,034.17

Finding the Fourth Proportional to 138,141.37, 190,374.51 and 121,034.17

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Solution

The fourth proportional to 138,141.37, 190,374.51 and 121,034.17 is: 166,798.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,141.37 : 190,374.51 = 121,034.17 : x
  2. Step 2: Convert to fraction form
    138,141.37/190,374.51 = 121,034.17/x
  3. Step 3: Cross multiply
    138,141.37x = 190,374.51 × 121,034.17
  4. Step 4: Simplify right side
    138,141.37x = 23,041,820,807.01
  5. Step 5: Solve for x
    x = 23,041,820,807.01/138,141.37
  6. Step 6: Final answer
    x = 166,798.84

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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.