Home / 454,054.86-681,080.40-138,510.72

Finding the Fourth Proportional to 454,054.86, 681,080.40 and 138,510.72

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Solution

The fourth proportional to 454,054.86, 681,080.40 and 138,510.72 is: 207,765.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,054.86 : 681,080.40 = 138,510.72 : x
  2. Step 2: Convert to fraction form
    454,054.86/681,080.40 = 138,510.72/x
  3. Step 3: Cross multiply
    454,054.86x = 681,080.40 × 138,510.72
  4. Step 4: Simplify right side
    454,054.86x = 94,336,936,581.89
  5. Step 5: Solve for x
    x = 94,336,936,581.89/454,054.86
  6. Step 6: Final answer
    x = 207,765.50

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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.