Home / 158,427.90-218,635.59-86,812.50

Finding the Fourth Proportional to 158,427.90, 218,635.59 and 86,812.50

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Solution

The fourth proportional to 158,427.90, 218,635.59 and 86,812.50 is: 119,804.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,427.90 : 218,635.59 = 86,812.50 : x
  2. Step 2: Convert to fraction form
    158,427.90/218,635.59 = 86,812.50/x
  3. Step 3: Cross multiply
    158,427.90x = 218,635.59 × 86,812.50
  4. Step 4: Simplify right side
    158,427.90x = 18,980,302,156.88
  5. Step 5: Solve for x
    x = 18,980,302,156.88/158,427.90
  6. Step 6: Final answer
    x = 119,804.04

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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.