Home / 128,501.79-192,729.46-34,985.67

Finding the Fourth Proportional to 128,501.79, 192,729.46 and 34,985.67

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Solution

The fourth proportional to 128,501.79, 192,729.46 and 34,985.67 is: 52,472.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,501.79 : 192,729.46 = 34,985.67 : x
  2. Step 2: Convert to fraction form
    128,501.79/192,729.46 = 34,985.67/x
  3. Step 3: Cross multiply
    128,501.79x = 192,729.46 × 34,985.67
  4. Step 4: Simplify right side
    128,501.79x = 6,742,769,286.84
  5. Step 5: Solve for x
    x = 6,742,769,286.84/128,501.79
  6. Step 6: Final answer
    x = 52,472.18

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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.