Home / 102,947.80-154,421.70-99,011.20

Finding the Fourth Proportional to 102,947.80, 154,421.70 and 99,011.20

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Solution

The fourth proportional to 102,947.80, 154,421.70 and 99,011.20 is: 148,516.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,947.80 : 154,421.70 = 99,011.20 : x
  2. Step 2: Convert to fraction form
    102,947.80/154,421.70 = 99,011.20/x
  3. Step 3: Cross multiply
    102,947.80x = 154,421.70 × 99,011.20
  4. Step 4: Simplify right side
    102,947.80x = 15,289,477,823.04
  5. Step 5: Solve for x
    x = 15,289,477,823.04/102,947.80
  6. Step 6: Final answer
    x = 148,516.80

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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.