Home / 105,666.06-145,818.30-57,919.30

Finding the Fourth Proportional to 105,666.06, 145,818.30 and 57,919.30

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Solution

The fourth proportional to 105,666.06, 145,818.30 and 57,919.30 is: 79,928.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,666.06 : 145,818.30 = 57,919.30 : x
  2. Step 2: Convert to fraction form
    105,666.06/145,818.30 = 57,919.30/x
  3. Step 3: Cross multiply
    105,666.06x = 145,818.30 × 57,919.30
  4. Step 4: Simplify right side
    105,666.06x = 8,445,693,863.19
  5. Step 5: Solve for x
    x = 8,445,693,863.19/105,666.06
  6. Step 6: Final answer
    x = 79,928.16

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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.