Home / 105,255.04-145,254.05-57,511.34

Finding the Fourth Proportional to 105,255.04, 145,254.05 and 57,511.34

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Solution

The fourth proportional to 105,255.04, 145,254.05 and 57,511.34 is: 79,366.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,255.04 : 145,254.05 = 57,511.34 : x
  2. Step 2: Convert to fraction form
    105,255.04/145,254.05 = 57,511.34/x
  3. Step 3: Cross multiply
    105,255.04x = 145,254.05 × 57,511.34
  4. Step 4: Simplify right side
    105,255.04x = 8,353,755,055.93
  5. Step 5: Solve for x
    x = 8,353,755,055.93/105,255.04
  6. Step 6: Final answer
    x = 79,366.79

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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.