Home / 138,460.56-191,075.76-74,798.36

Finding the Fourth Proportional to 138,460.56, 191,075.76 and 74,798.36

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Solution

The fourth proportional to 138,460.56, 191,075.76 and 74,798.36 is: 103,221.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,460.56 : 191,075.76 = 74,798.36 : x
  2. Step 2: Convert to fraction form
    138,460.56/191,075.76 = 74,798.36/x
  3. Step 3: Cross multiply
    138,460.56x = 191,075.76 × 74,798.36
  4. Step 4: Simplify right side
    138,460.56x = 14,292,153,782.31
  5. Step 5: Solve for x
    x = 14,292,153,782.31/138,460.56
  6. Step 6: Final answer
    x = 103,221.84

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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.