Home / 105,170.34-145,137.09-57,425.58

Finding the Fourth Proportional to 105,170.34, 145,137.09 and 57,425.58

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Solution

The fourth proportional to 105,170.34, 145,137.09 and 57,425.58 is: 79,248.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,170.34 : 145,137.09 = 57,425.58 : x
  2. Step 2: Convert to fraction form
    105,170.34/145,137.09 = 57,425.58/x
  3. Step 3: Cross multiply
    105,170.34x = 145,137.09 × 57,425.58
  4. Step 4: Simplify right side
    105,170.34x = 8,334,581,572.76
  5. Step 5: Solve for x
    x = 8,334,581,572.76/105,170.34
  6. Step 6: Final answer
    x = 79,248.40

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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.