Home / 102,719.48-154,077.05-47,315.48

Finding the Fourth Proportional to 102,719.48, 154,077.05 and 47,315.48

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Solution

The fourth proportional to 102,719.48, 154,077.05 and 47,315.48 is: 70,972.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,719.48 : 154,077.05 = 47,315.48 : x
  2. Step 2: Convert to fraction form
    102,719.48/154,077.05 = 47,315.48/x
  3. Step 3: Cross multiply
    102,719.48x = 154,077.05 × 47,315.48
  4. Step 4: Simplify right side
    102,719.48x = 7,290,228,925.64
  5. Step 5: Solve for x
    x = 7,290,228,925.64/102,719.48
  6. Step 6: Final answer
    x = 70,972.22

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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.