Home / 112,728.03-155,558.48-61,730.87

Finding the Fourth Proportional to 112,728.03, 155,558.48 and 61,730.87

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Solution

The fourth proportional to 112,728.03, 155,558.48 and 61,730.87 is: 85,185.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,728.03 : 155,558.48 = 61,730.87 : x
  2. Step 2: Convert to fraction form
    112,728.03/155,558.48 = 61,730.87/x
  3. Step 3: Cross multiply
    112,728.03x = 155,558.48 × 61,730.87
  4. Step 4: Simplify right side
    112,728.03x = 9,602,760,071.71
  5. Step 5: Solve for x
    x = 9,602,760,071.71/112,728.03
  6. Step 6: Final answer
    x = 85,185.20

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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.