Home / 102,870.64-141,975.12-57,566.08

Finding the Fourth Proportional to 102,870.64, 141,975.12 and 57,566.08

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Solution

The fourth proportional to 102,870.64, 141,975.12 and 57,566.08 is: 79,448.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,870.64 : 141,975.12 = 57,566.08 : x
  2. Step 2: Convert to fraction form
    102,870.64/141,975.12 = 57,566.08/x
  3. Step 3: Cross multiply
    102,870.64x = 141,975.12 × 57,566.08
  4. Step 4: Simplify right side
    102,870.64x = 8,172,951,115.93
  5. Step 5: Solve for x
    x = 8,172,951,115.93/102,870.64
  6. Step 6: Final answer
    x = 79,448.82

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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.