Home / 100,398.24-138,547.14-55,075.82

Finding the Fourth Proportional to 100,398.24, 138,547.14 and 55,075.82

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Solution

The fourth proportional to 100,398.24, 138,547.14 and 55,075.82 is: 76,003.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,398.24 : 138,547.14 = 55,075.82 : x
  2. Step 2: Convert to fraction form
    100,398.24/138,547.14 = 55,075.82/x
  3. Step 3: Cross multiply
    100,398.24x = 138,547.14 × 55,075.82
  4. Step 4: Simplify right side
    100,398.24x = 7,630,596,651.42
  5. Step 5: Solve for x
    x = 7,630,596,651.42/100,398.24
  6. Step 6: Final answer
    x = 76,003.29

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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.