Home / 93,455.15-128,963.60-53,165.12

Finding the Fourth Proportional to 93,455.15, 128,963.60 and 53,165.12

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Solution

The fourth proportional to 93,455.15, 128,963.60 and 53,165.12 is: 73,365.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,455.15 : 128,963.60 = 53,165.12 : x
  2. Step 2: Convert to fraction form
    93,455.15/128,963.60 = 53,165.12/x
  3. Step 3: Cross multiply
    93,455.15x = 128,963.60 × 53,165.12
  4. Step 4: Simplify right side
    93,455.15x = 6,856,365,269.63
  5. Step 5: Solve for x
    x = 6,856,365,269.63/93,455.15
  6. Step 6: Final answer
    x = 73,365.30

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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.