Home / 103,605.32-155,384.92-40,427.12

Finding the Fourth Proportional to 103,605.32, 155,384.92 and 40,427.12

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Solution

The fourth proportional to 103,605.32, 155,384.92 and 40,427.12 is: 60,631.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,605.32 : 155,384.92 = 40,427.12 : x
  2. Step 2: Convert to fraction form
    103,605.32/155,384.92 = 40,427.12/x
  3. Step 3: Cross multiply
    103,605.32x = 155,384.92 × 40,427.12
  4. Step 4: Simplify right side
    103,605.32x = 6,281,764,807.03
  5. Step 5: Solve for x
    x = 6,281,764,807.03/103,605.32
  6. Step 6: Final answer
    x = 60,631.68

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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.