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Finding the Fourth Proportional to 107,130.85, 147,503.93 and 90,964.14

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Solution

The fourth proportional to 107,130.85, 147,503.93 and 90,964.14 is: 125,244.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,130.85 : 147,503.93 = 90,964.14 : x
  2. Step 2: Convert to fraction form
    107,130.85/147,503.93 = 90,964.14/x
  3. Step 3: Cross multiply
    107,130.85x = 147,503.93 × 90,964.14
  4. Step 4: Simplify right side
    107,130.85x = 13,417,568,139.07
  5. Step 5: Solve for x
    x = 13,417,568,139.07/107,130.85
  6. Step 6: Final answer
    x = 125,244.67

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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.