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Finding the Fourth Proportional to 135,159.57, 186,512.68 and 74,726.69

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Solution

The fourth proportional to 135,159.57, 186,512.68 and 74,726.69 is: 103,118.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,159.57 : 186,512.68 = 74,726.69 : x
  2. Step 2: Convert to fraction form
    135,159.57/186,512.68 = 74,726.69/x
  3. Step 3: Cross multiply
    135,159.57x = 186,512.68 × 74,726.69
  4. Step 4: Simplify right side
    135,159.57x = 13,937,475,219.43
  5. Step 5: Solve for x
    x = 13,937,475,219.43/135,159.57
  6. Step 6: Final answer
    x = 103,118.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.