Home / 205,263.40-307,851.90-86,938.60

Finding the Fourth Proportional to 205,263.40, 307,851.90 and 86,938.60

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Solution

The fourth proportional to 205,263.40, 307,851.90 and 86,938.60 is: 130,389.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,263.40 : 307,851.90 = 86,938.60 : x
  2. Step 2: Convert to fraction form
    205,263.40/307,851.90 = 86,938.60/x
  3. Step 3: Cross multiply
    205,263.40x = 307,851.90 × 86,938.60
  4. Step 4: Simplify right side
    205,263.40x = 26,764,213,193.34
  5. Step 5: Solve for x
    x = 26,764,213,193.34/205,263.40
  6. Step 6: Final answer
    x = 130,389.60

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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.