Home / 186,942.72-257,970-102,042.72

Finding the Fourth Proportional to 186,942.72, 257,970 and 102,042.72

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Solution

The fourth proportional to 186,942.72, 257,970 and 102,042.72 is: 140,812.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,942.72 : 257,970 = 102,042.72 : x
  2. Step 2: Convert to fraction form
    186,942.72/257,970 = 102,042.72/x
  3. Step 3: Cross multiply
    186,942.72x = 257,970 × 102,042.72
  4. Step 4: Simplify right side
    186,942.72x = 26,323,960,478.40
  5. Step 5: Solve for x
    x = 26,323,960,478.40/186,942.72
  6. Step 6: Final answer
    x = 140,812.97

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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.