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Finding the Fourth Proportional to 113,392.40, 169,883.80 and 100,285.20

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Solution

The fourth proportional to 113,392.40, 169,883.80 and 100,285.20 is: 150,246.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,392.40 : 169,883.80 = 100,285.20 : x
  2. Step 2: Convert to fraction form
    113,392.40/169,883.80 = 100,285.20/x
  3. Step 3: Cross multiply
    113,392.40x = 169,883.80 × 100,285.20
  4. Step 4: Simplify right side
    113,392.40x = 17,036,830,859.76
  5. Step 5: Solve for x
    x = 17,036,830,859.76/113,392.40
  6. Step 6: Final answer
    x = 150,246.67

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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.