Home / 103,615.32-155,399.76-40,437.12

Finding the Fourth Proportional to 103,615.32, 155,399.76 and 40,437.12

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Solution

The fourth proportional to 103,615.32, 155,399.76 and 40,437.12 is: 60,646.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,615.32 : 155,399.76 = 40,437.12 : x
  2. Step 2: Convert to fraction form
    103,615.32/155,399.76 = 40,437.12/x
  3. Step 3: Cross multiply
    103,615.32x = 155,399.76 × 40,437.12
  4. Step 4: Simplify right side
    103,615.32x = 6,283,918,743.09
  5. Step 5: Solve for x
    x = 6,283,918,743.09/103,615.32
  6. Step 6: Final answer
    x = 60,646.62

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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.