Home / 105,177.87-145,144.89-57,430.88

Finding the Fourth Proportional to 105,177.87, 145,144.89 and 57,430.88

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Solution

The fourth proportional to 105,177.87, 145,144.89 and 57,430.88 is: 79,254.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,177.87 : 145,144.89 = 57,430.88 : x
  2. Step 2: Convert to fraction form
    105,177.87/145,144.89 = 57,430.88/x
  3. Step 3: Cross multiply
    105,177.87x = 145,144.89 × 57,430.88
  4. Step 4: Simplify right side
    105,177.87x = 8,335,798,760.20
  5. Step 5: Solve for x
    x = 8,335,798,760.20/105,177.87
  6. Step 6: Final answer
    x = 79,254.30

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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.