Home / 121,402.19-166,643.69-107,673.30

Finding the Fourth Proportional to 121,402.19, 166,643.69 and 107,673.30

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Solution

The fourth proportional to 121,402.19, 166,643.69 and 107,673.30 is: 147,798.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,402.19 : 166,643.69 = 107,673.30 : x
  2. Step 2: Convert to fraction form
    121,402.19/166,643.69 = 107,673.30/x
  3. Step 3: Cross multiply
    121,402.19x = 166,643.69 × 107,673.30
  4. Step 4: Simplify right side
    121,402.19x = 17,943,075,488.11
  5. Step 5: Solve for x
    x = 17,943,075,488.11/121,402.19
  6. Step 6: Final answer
    x = 147,798.62

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.