Home / 104,831.80-157,074.90-87,206.20

Finding the Fourth Proportional to 104,831.80, 157,074.90 and 87,206.20

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Solution

The fourth proportional to 104,831.80, 157,074.90 and 87,206.20 is: 130,665.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,831.80 : 157,074.90 = 87,206.20 : x
  2. Step 2: Convert to fraction form
    104,831.80/157,074.90 = 87,206.20/x
  3. Step 3: Cross multiply
    104,831.80x = 157,074.90 × 87,206.20
  4. Step 4: Simplify right side
    104,831.80x = 13,697,905,144.38
  5. Step 5: Solve for x
    x = 13,697,905,144.38/104,831.80
  6. Step 6: Final answer
    x = 130,665.55

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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.