Home / 258,624.06-387,950.67-81,127.14

Finding the Fourth Proportional to 258,624.06, 387,950.67 and 81,127.14

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Solution

The fourth proportional to 258,624.06, 387,950.67 and 81,127.14 is: 121,695.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,624.06 : 387,950.67 = 81,127.14 : x
  2. Step 2: Convert to fraction form
    258,624.06/387,950.67 = 81,127.14/x
  3. Step 3: Cross multiply
    258,624.06x = 387,950.67 × 81,127.14
  4. Step 4: Simplify right side
    258,624.06x = 31,473,328,318.18
  5. Step 5: Solve for x
    x = 31,473,328,318.18/258,624.06
  6. Step 6: Final answer
    x = 121,695.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.