Home / 127,712.51-176,243.20-74,028.63

Finding the Fourth Proportional to 127,712.51, 176,243.20 and 74,028.63

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Solution

The fourth proportional to 127,712.51, 176,243.20 and 74,028.63 is: 102,159.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,712.51 : 176,243.20 = 74,028.63 : x
  2. Step 2: Convert to fraction form
    127,712.51/176,243.20 = 74,028.63/x
  3. Step 3: Cross multiply
    127,712.51x = 176,243.20 × 74,028.63
  4. Step 4: Simplify right side
    127,712.51x = 13,047,042,642.82
  5. Step 5: Solve for x
    x = 13,047,042,642.82/127,712.51
  6. Step 6: Final answer
    x = 102,159.47

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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.