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Finding the Fourth Proportional to 102,095.51, 140,769.72 and 66,272.45

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Solution

The fourth proportional to 102,095.51, 140,769.72 and 66,272.45 is: 91,376.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,095.51 : 140,769.72 = 66,272.45 : x
  2. Step 2: Convert to fraction form
    102,095.51/140,769.72 = 66,272.45/x
  3. Step 3: Cross multiply
    102,095.51x = 140,769.72 × 66,272.45
  4. Step 4: Simplify right side
    102,095.51x = 9,329,153,526.37
  5. Step 5: Solve for x
    x = 9,329,153,526.37/102,095.51
  6. Step 6: Final answer
    x = 91,376.73

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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.