Home / 112,981-155,913.78-62,680.36

Finding the Fourth Proportional to 112,981, 155,913.78 and 62,680.36

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Solution

The fourth proportional to 112,981, 155,913.78 and 62,680.36 is: 86,498.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,981 : 155,913.78 = 62,680.36 : x
  2. Step 2: Convert to fraction form
    112,981/155,913.78 = 62,680.36/x
  3. Step 3: Cross multiply
    112,981x = 155,913.78 × 62,680.36
  4. Step 4: Simplify right side
    112,981x = 9,772,731,859.36
  5. Step 5: Solve for x
    x = 9,772,731,859.36/112,981
  6. Step 6: Final answer
    x = 86,498.90

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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.