Home / 103,245.08-142,479.86-57,303.50

Finding the Fourth Proportional to 103,245.08, 142,479.86 and 57,303.50

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Solution

The fourth proportional to 103,245.08, 142,479.86 and 57,303.50 is: 79,079.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,245.08 : 142,479.86 = 57,303.50 : x
  2. Step 2: Convert to fraction form
    103,245.08/142,479.86 = 57,303.50/x
  3. Step 3: Cross multiply
    103,245.08x = 142,479.86 × 57,303.50
  4. Step 4: Simplify right side
    103,245.08x = 8,164,593,658.59
  5. Step 5: Solve for x
    x = 8,164,593,658.59/103,245.08
  6. Step 6: Final answer
    x = 79,079.74

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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.