Home / 245,079.20-367,532.40-87,312.80

Finding the Fourth Proportional to 245,079.20, 367,532.40 and 87,312.80

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Solution

The fourth proportional to 245,079.20, 367,532.40 and 87,312.80 is: 130,938.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,079.20 : 367,532.40 = 87,312.80 : x
  2. Step 2: Convert to fraction form
    245,079.20/367,532.40 = 87,312.80/x
  3. Step 3: Cross multiply
    245,079.20x = 367,532.40 × 87,312.80
  4. Step 4: Simplify right side
    245,079.20x = 32,090,282,934.72
  5. Step 5: Solve for x
    x = 32,090,282,934.72/245,079.20
  6. Step 6: Final answer
    x = 130,938.42

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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.