Home / 105,136.98-145,091.07-57,394.50

Finding the Fourth Proportional to 105,136.98, 145,091.07 and 57,394.50

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Solution

The fourth proportional to 105,136.98, 145,091.07 and 57,394.50 is: 79,205.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,136.98 : 145,091.07 = 57,394.50 : x
  2. Step 2: Convert to fraction form
    105,136.98/145,091.07 = 57,394.50/x
  3. Step 3: Cross multiply
    105,136.98x = 145,091.07 × 57,394.50
  4. Step 4: Simplify right side
    105,136.98x = 8,327,429,417.12
  5. Step 5: Solve for x
    x = 8,327,429,417.12/105,136.98
  6. Step 6: Final answer
    x = 79,205.52

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1.5x scale

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.