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Finding the Fourth Proportional to 121,465.47, 167,621.91 and 67,750.45

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Solution

The fourth proportional to 121,465.47, 167,621.91 and 67,750.45 is: 93,495.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,465.47 : 167,621.91 = 67,750.45 : x
  2. Step 2: Convert to fraction form
    121,465.47/167,621.91 = 67,750.45/x
  3. Step 3: Cross multiply
    121,465.47x = 167,621.91 × 67,750.45
  4. Step 4: Simplify right side
    121,465.47x = 11,356,459,832.36
  5. Step 5: Solve for x
    x = 11,356,459,832.36/121,465.47
  6. Step 6: Final answer
    x = 93,495.38

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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.