Home / 141,872.81-195,783.18-78,210.60

Finding the Fourth Proportional to 141,872.81, 195,783.18 and 78,210.60

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Solution

The fourth proportional to 141,872.81, 195,783.18 and 78,210.60 is: 107,929.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,872.81 : 195,783.18 = 78,210.60 : x
  2. Step 2: Convert to fraction form
    141,872.81/195,783.18 = 78,210.60/x
  3. Step 3: Cross multiply
    141,872.81x = 195,783.18 × 78,210.60
  4. Step 4: Simplify right side
    141,872.81x = 15,312,319,977.71
  5. Step 5: Solve for x
    x = 15,312,319,977.71/141,872.81
  6. Step 6: Final answer
    x = 107,929.92

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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.