Home / 103,421.52-154,988.76-47,124.05

Finding the Fourth Proportional to 103,421.52, 154,988.76 and 47,124.05

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Solution

The fourth proportional to 103,421.52, 154,988.76 and 47,124.05 is: 70,620.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,421.52 : 154,988.76 = 47,124.05 : x
  2. Step 2: Convert to fraction form
    103,421.52/154,988.76 = 47,124.05/x
  3. Step 3: Cross multiply
    103,421.52x = 154,988.76 × 47,124.05
  4. Step 4: Simplify right side
    103,421.52x = 7,303,697,300.73
  5. Step 5: Solve for x
    x = 7,303,697,300.73/103,421.52
  6. Step 6: Final answer
    x = 70,620.67

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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.