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Finding the Fourth Proportional to 124,599.10, 186,898.65 and 87,201.40

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Solution

The fourth proportional to 124,599.10, 186,898.65 and 87,201.40 is: 130,802.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,599.10 : 186,898.65 = 87,201.40 : x
  2. Step 2: Convert to fraction form
    124,599.10/186,898.65 = 87,201.40/x
  3. Step 3: Cross multiply
    124,599.10x = 186,898.65 × 87,201.40
  4. Step 4: Simplify right side
    124,599.10x = 16,297,823,938.11
  5. Step 5: Solve for x
    x = 16,297,823,938.11/124,599.10
  6. Step 6: Final answer
    x = 130,802.10

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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.