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Finding the Fourth Proportional to 93,095.67, 128,068.88 and 81,558.62

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Solution

The fourth proportional to 93,095.67, 128,068.88 and 81,558.62 is: 112,197.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,095.67 : 128,068.88 = 81,558.62 : x
  2. Step 2: Convert to fraction form
    93,095.67/128,068.88 = 81,558.62/x
  3. Step 3: Cross multiply
    93,095.67x = 128,068.88 × 81,558.62
  4. Step 4: Simplify right side
    93,095.67x = 10,445,121,117.75
  5. Step 5: Solve for x
    x = 10,445,121,117.75/93,095.67
  6. Step 6: Final answer
    x = 112,197.71

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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.