Home / 258,018.06-387,072.45-117,790.86

Finding the Fourth Proportional to 258,018.06, 387,072.45 and 117,790.86

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Solution

The fourth proportional to 258,018.06, 387,072.45 and 117,790.86 is: 176,707.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,018.06 : 387,072.45 = 117,790.86 : x
  2. Step 2: Convert to fraction form
    258,018.06/387,072.45 = 117,790.86/x
  3. Step 3: Cross multiply
    258,018.06x = 387,072.45 × 117,790.86
  4. Step 4: Simplify right side
    258,018.06x = 45,593,596,767.81
  5. Step 5: Solve for x
    x = 45,593,596,767.81/258,018.06
  6. Step 6: Final answer
    x = 176,707.00

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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.