Home / 78,095.04-117,189.24-71,742.64

Finding the Fourth Proportional to 78,095.04, 117,189.24 and 71,742.64

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Solution

The fourth proportional to 78,095.04, 117,189.24 and 71,742.64 is: 107,656.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,095.04 : 117,189.24 = 71,742.64 : x
  2. Step 2: Convert to fraction form
    78,095.04/117,189.24 = 71,742.64/x
  3. Step 3: Cross multiply
    78,095.04x = 117,189.24 × 71,742.64
  4. Step 4: Simplify right side
    78,095.04x = 8,407,465,457.19
  5. Step 5: Solve for x
    x = 8,407,465,457.19/78,095.04
  6. Step 6: Final answer
    x = 107,656.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.