Home / 141,795.50-195,681.91-78,137.40

Finding the Fourth Proportional to 141,795.50, 195,681.91 and 78,137.40

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Solution

The fourth proportional to 141,795.50, 195,681.91 and 78,137.40 is: 107,831.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,795.50 : 195,681.91 = 78,137.40 : x
  2. Step 2: Convert to fraction form
    141,795.50/195,681.91 = 78,137.40/x
  3. Step 3: Cross multiply
    141,795.50x = 195,681.91 × 78,137.40
  4. Step 4: Simplify right side
    141,795.50x = 15,290,075,674.43
  5. Step 5: Solve for x
    x = 15,290,075,674.43/141,795.50
  6. Step 6: Final answer
    x = 107,831.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.