Home / 136,146.98-187,855.08-79,547.42

Finding the Fourth Proportional to 136,146.98, 187,855.08 and 79,547.42

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Solution

The fourth proportional to 136,146.98, 187,855.08 and 79,547.42 is: 109,759.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,146.98 : 187,855.08 = 79,547.42 : x
  2. Step 2: Convert to fraction form
    136,146.98/187,855.08 = 79,547.42/x
  3. Step 3: Cross multiply
    136,146.98x = 187,855.08 × 79,547.42
  4. Step 4: Simplify right side
    136,146.98x = 14,943,386,947.89
  5. Step 5: Solve for x
    x = 14,943,386,947.89/136,146.98
  6. Step 6: Final answer
    x = 109,759.22

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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.