Home / 112,705.08-155,533.28-61,721.16

Finding the Fourth Proportional to 112,705.08, 155,533.28 and 61,721.16

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Solution

The fourth proportional to 112,705.08, 155,533.28 and 61,721.16 is: 85,175.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,705.08 : 155,533.28 = 61,721.16 : x
  2. Step 2: Convert to fraction form
    112,705.08/155,533.28 = 61,721.16/x
  3. Step 3: Cross multiply
    112,705.08x = 155,533.28 × 61,721.16
  4. Step 4: Simplify right side
    112,705.08x = 9,599,694,460.20
  5. Step 5: Solve for x
    x = 9,599,694,460.20/112,705.08
  6. Step 6: Final answer
    x = 85,175.35

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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.