Home / 235,742.16-325,321.74-128,312.04

Finding the Fourth Proportional to 235,742.16, 325,321.74 and 128,312.04

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Solution

The fourth proportional to 235,742.16, 325,321.74 and 128,312.04 is: 177,069.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,742.16 : 325,321.74 = 128,312.04 : x
  2. Step 2: Convert to fraction form
    235,742.16/325,321.74 = 128,312.04/x
  3. Step 3: Cross multiply
    235,742.16x = 325,321.74 × 128,312.04
  4. Step 4: Simplify right side
    235,742.16x = 41,742,696,115.75
  5. Step 5: Solve for x
    x = 41,742,696,115.75/235,742.16
  6. Step 6: Final answer
    x = 177,069.29

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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.