Home / 103,141.28-142,334.80-62,855.20

Finding the Fourth Proportional to 103,141.28, 142,334.80 and 62,855.20

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Solution

The fourth proportional to 103,141.28, 142,334.80 and 62,855.20 is: 86,740.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,141.28 : 142,334.80 = 62,855.20 : x
  2. Step 2: Convert to fraction form
    103,141.28/142,334.80 = 62,855.20/x
  3. Step 3: Cross multiply
    103,141.28x = 142,334.80 × 62,855.20
  4. Step 4: Simplify right side
    103,141.28x = 8,946,482,320.96
  5. Step 5: Solve for x
    x = 8,946,482,320.96/103,141.28
  6. Step 6: Final answer
    x = 86,740.07

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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.