Home / 112,900.64-155,802.84-61,217.78

Finding the Fourth Proportional to 112,900.64, 155,802.84 and 61,217.78

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Solution

The fourth proportional to 112,900.64, 155,802.84 and 61,217.78 is: 84,480.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,900.64 : 155,802.84 = 61,217.78 : x
  2. Step 2: Convert to fraction form
    112,900.64/155,802.84 = 61,217.78/x
  3. Step 3: Cross multiply
    112,900.64x = 155,802.84 × 61,217.78
  4. Step 4: Simplify right side
    112,900.64x = 9,537,903,982.50
  5. Step 5: Solve for x
    x = 9,537,903,982.50/112,900.64
  6. Step 6: Final answer
    x = 84,480.51

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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.