Home / 103,948.20-155,995.20-66,599.10

Finding the Fourth Proportional to 103,948.20, 155,995.20 and 66,599.10

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Solution

The fourth proportional to 103,948.20, 155,995.20 and 66,599.10 is: 99,945.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,948.20 : 155,995.20 = 66,599.10 : x
  2. Step 2: Convert to fraction form
    103,948.20/155,995.20 = 66,599.10/x
  3. Step 3: Cross multiply
    103,948.20x = 155,995.20 × 66,599.10
  4. Step 4: Simplify right side
    103,948.20x = 10,389,139,924.32
  5. Step 5: Solve for x
    x = 10,389,139,924.32/103,948.20
  6. Step 6: Final answer
    x = 99,945.36

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1.5x scale

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.