Home / 258,746.86-387,989.01-118,385.20

Finding the Fourth Proportional to 258,746.86, 387,989.01 and 118,385.20

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Solution

The fourth proportional to 258,746.86, 387,989.01 and 118,385.20 is: 177,517.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,746.86 : 387,989.01 = 118,385.20 : x
  2. Step 2: Convert to fraction form
    258,746.86/387,989.01 = 118,385.20/x
  3. Step 3: Cross multiply
    258,746.86x = 387,989.01 × 118,385.20
  4. Step 4: Simplify right side
    258,746.86x = 45,932,154,606.71
  5. Step 5: Solve for x
    x = 45,932,154,606.71/258,746.86
  6. Step 6: Final answer
    x = 177,517.73

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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.