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Finding the Fourth Proportional to 93,130.36, 128,500.86 and 89,929.96

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Solution

The fourth proportional to 93,130.36, 128,500.86 and 89,929.96 is: 124,084.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,130.36 : 128,500.86 = 89,929.96 : x
  2. Step 2: Convert to fraction form
    93,130.36/128,500.86 = 89,929.96/x
  3. Step 3: Cross multiply
    93,130.36x = 128,500.86 × 89,929.96
  4. Step 4: Simplify right side
    93,130.36x = 11,556,077,199.77
  5. Step 5: Solve for x
    x = 11,556,077,199.77/93,130.36
  6. Step 6: Final answer
    x = 124,084.96

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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.