Home / 105,169.08-145,132.02-57,421.92

Finding the Fourth Proportional to 105,169.08, 145,132.02 and 57,421.92

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Solution

The fourth proportional to 105,169.08, 145,132.02 and 57,421.92 is: 79,241.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,169.08 : 145,132.02 = 57,421.92 : x
  2. Step 2: Convert to fraction form
    105,169.08/145,132.02 = 57,421.92/x
  3. Step 3: Cross multiply
    105,169.08x = 145,132.02 × 57,421.92
  4. Step 4: Simplify right side
    105,169.08x = 8,333,759,241.88
  5. Step 5: Solve for x
    x = 8,333,759,241.88/105,169.08
  6. Step 6: Final answer
    x = 79,241.53

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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.