Home / 74,150.90-102,328.55-40,159.79

Finding the Fourth Proportional to 74,150.90, 102,328.55 and 40,159.79

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Solution

The fourth proportional to 74,150.90, 102,328.55 and 40,159.79 is: 55,420.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,150.90 : 102,328.55 = 40,159.79 : x
  2. Step 2: Convert to fraction form
    74,150.90/102,328.55 = 40,159.79/x
  3. Step 3: Cross multiply
    74,150.90x = 102,328.55 × 40,159.79
  4. Step 4: Simplify right side
    74,150.90x = 4,109,492,622.38
  5. Step 5: Solve for x
    x = 4,109,492,622.38/74,150.90
  6. Step 6: Final answer
    x = 55,420.67

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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.