Home / 121,813.61-182,701.91-42,909.38

Finding the Fourth Proportional to 121,813.61, 182,701.91 and 42,909.38

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Solution

The fourth proportional to 121,813.61, 182,701.91 and 42,909.38 is: 64,357.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,813.61 : 182,701.91 = 42,909.38 : x
  2. Step 2: Convert to fraction form
    121,813.61/182,701.91 = 42,909.38/x
  3. Step 3: Cross multiply
    121,813.61x = 182,701.91 × 42,909.38
  4. Step 4: Simplify right side
    121,813.61x = 7,839,624,554.86
  5. Step 5: Solve for x
    x = 7,839,624,554.86/121,813.61
  6. Step 6: Final answer
    x = 64,357.54

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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.