Home / 121,387.16-167,511.03-70,396.71

Finding the Fourth Proportional to 121,387.16, 167,511.03 and 70,396.71

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Solution

The fourth proportional to 121,387.16, 167,511.03 and 70,396.71 is: 97,145.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,387.16 : 167,511.03 = 70,396.71 : x
  2. Step 2: Convert to fraction form
    121,387.16/167,511.03 = 70,396.71/x
  3. Step 3: Cross multiply
    121,387.16x = 167,511.03 × 70,396.71
  4. Step 4: Simplify right side
    121,387.16x = 11,792,225,400.71
  5. Step 5: Solve for x
    x = 11,792,225,400.71/121,387.16
  6. Step 6: Final answer
    x = 97,145.58

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1.5x scale

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.