Home / 105,301.68-145,315.80-57,555.60

Finding the Fourth Proportional to 105,301.68, 145,315.80 and 57,555.60

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Solution

The fourth proportional to 105,301.68, 145,315.80 and 57,555.60 is: 79,426.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,301.68 : 145,315.80 = 57,555.60 : x
  2. Step 2: Convert to fraction form
    105,301.68/145,315.80 = 57,555.60/x
  3. Step 3: Cross multiply
    105,301.68x = 145,315.80 × 57,555.60
  4. Step 4: Simplify right side
    105,301.68x = 8,363,738,058.48
  5. Step 5: Solve for x
    x = 8,363,738,058.48/105,301.68
  6. Step 6: Final answer
    x = 79,426.44

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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.