Home / 152,130.21-209,935.74-84,145.50

Finding the Fourth Proportional to 152,130.21, 209,935.74 and 84,145.50

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Solution

The fourth proportional to 152,130.21, 209,935.74 and 84,145.50 is: 116,118.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,130.21 : 209,935.74 = 84,145.50 : x
  2. Step 2: Convert to fraction form
    152,130.21/209,935.74 = 84,145.50/x
  3. Step 3: Cross multiply
    152,130.21x = 209,935.74 × 84,145.50
  4. Step 4: Simplify right side
    152,130.21x = 17,665,147,810.17
  5. Step 5: Solve for x
    x = 17,665,147,810.17/152,130.21
  6. Step 6: Final answer
    x = 116,118.61

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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.