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Finding the Fourth Proportional to 186,013.80, 278,631.90 and 102,810.60

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Solution

The fourth proportional to 186,013.80, 278,631.90 and 102,810.60 is: 154,001.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,013.80 : 278,631.90 = 102,810.60 : x
  2. Step 2: Convert to fraction form
    186,013.80/278,631.90 = 102,810.60/x
  3. Step 3: Cross multiply
    186,013.80x = 278,631.90 × 102,810.60
  4. Step 4: Simplify right side
    186,013.80x = 28,646,312,818.14
  5. Step 5: Solve for x
    x = 28,646,312,818.14/186,013.80
  6. Step 6: Final answer
    x = 154,001.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.