Home / 136,949.84-188,988.52-76,521.36

Finding the Fourth Proportional to 136,949.84, 188,988.52 and 76,521.36

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Solution

The fourth proportional to 136,949.84, 188,988.52 and 76,521.36 is: 105,598.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,949.84 : 188,988.52 = 76,521.36 : x
  2. Step 2: Convert to fraction form
    136,949.84/188,988.52 = 76,521.36/x
  3. Step 3: Cross multiply
    136,949.84x = 188,988.52 × 76,521.36
  4. Step 4: Simplify right side
    136,949.84x = 14,461,658,574.79
  5. Step 5: Solve for x
    x = 14,461,658,574.79/136,949.84
  6. Step 6: Final answer
    x = 105,598.21

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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.