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Finding the Fourth Proportional to 93,166.80, 128,325.24 and 71,615.28

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Solution

The fourth proportional to 93,166.80, 128,325.24 and 71,615.28 is: 98,640.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,166.80 : 128,325.24 = 71,615.28 : x
  2. Step 2: Convert to fraction form
    93,166.80/128,325.24 = 71,615.28/x
  3. Step 3: Cross multiply
    93,166.80x = 128,325.24 × 71,615.28
  4. Step 4: Simplify right side
    93,166.80x = 9,190,047,993.67
  5. Step 5: Solve for x
    x = 9,190,047,993.67/93,166.80
  6. Step 6: Final answer
    x = 98,640.80

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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.