Home / 105,173.34-145,138.11-57,426.54

Finding the Fourth Proportional to 105,173.34, 145,138.11 and 57,426.54

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Solution

The fourth proportional to 105,173.34, 145,138.11 and 57,426.54 is: 79,248.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,173.34 : 145,138.11 = 57,426.54 : x
  2. Step 2: Convert to fraction form
    105,173.34/145,138.11 = 57,426.54/x
  3. Step 3: Cross multiply
    105,173.34x = 145,138.11 × 57,426.54
  4. Step 4: Simplify right side
    105,173.34x = 8,334,779,479.44
  5. Step 5: Solve for x
    x = 8,334,779,479.44/105,173.34
  6. Step 6: Final answer
    x = 79,248.03

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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.