Home / 145,298.88-218,276.42-86,173.34

Finding the Fourth Proportional to 145,298.88, 218,276.42 and 86,173.34

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Solution

The fourth proportional to 145,298.88, 218,276.42 and 86,173.34 is: 129,454.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,298.88 : 218,276.42 = 86,173.34 : x
  2. Step 2: Convert to fraction form
    145,298.88/218,276.42 = 86,173.34/x
  3. Step 3: Cross multiply
    145,298.88x = 218,276.42 × 86,173.34
  4. Step 4: Simplify right side
    145,298.88x = 18,809,606,632.39
  5. Step 5: Solve for x
    x = 18,809,606,632.39/145,298.88
  6. Step 6: Final answer
    x = 129,454.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.