Home / 121,216.08-167,329.80-81,495.12

Finding the Fourth Proportional to 121,216.08, 167,329.80 and 81,495.12

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Solution

The fourth proportional to 121,216.08, 167,329.80 and 81,495.12 is: 112,497.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,216.08 : 167,329.80 = 81,495.12 : x
  2. Step 2: Convert to fraction form
    121,216.08/167,329.80 = 81,495.12/x
  3. Step 3: Cross multiply
    121,216.08x = 167,329.80 × 81,495.12
  4. Step 4: Simplify right side
    121,216.08x = 13,636,562,130.58
  5. Step 5: Solve for x
    x = 13,636,562,130.58/121,216.08
  6. Step 6: Final answer
    x = 112,497.96

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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.