Home / 105,637.12-145,780.37-57,889.44

Finding the Fourth Proportional to 105,637.12, 145,780.37 and 57,889.44

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Solution

The fourth proportional to 105,637.12, 145,780.37 and 57,889.44 is: 79,888.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,637.12 : 145,780.37 = 57,889.44 : x
  2. Step 2: Convert to fraction form
    105,637.12/145,780.37 = 57,889.44/x
  3. Step 3: Cross multiply
    105,637.12x = 145,780.37 × 57,889.44
  4. Step 4: Simplify right side
    105,637.12x = 8,439,143,400.76
  5. Step 5: Solve for x
    x = 8,439,143,400.76/105,637.12
  6. Step 6: Final answer
    x = 79,888.05

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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.