Home / 93,140.63-128,289.21-71,589.16

Finding the Fourth Proportional to 93,140.63, 128,289.21 and 71,589.16

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Solution

The fourth proportional to 93,140.63, 128,289.21 and 71,589.16 is: 98,604.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,140.63 : 128,289.21 = 71,589.16 : x
  2. Step 2: Convert to fraction form
    93,140.63/128,289.21 = 71,589.16/x
  3. Step 3: Cross multiply
    93,140.63x = 128,289.21 × 71,589.16
  4. Step 4: Simplify right side
    93,140.63x = 9,184,116,780.96
  5. Step 5: Solve for x
    x = 9,184,116,780.96/93,140.63
  6. Step 6: Final answer
    x = 98,604.84

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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.