Home / 145,239.79-200,449.73-81,577.60

Finding the Fourth Proportional to 145,239.79, 200,449.73 and 81,577.60

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Solution

The fourth proportional to 145,239.79, 200,449.73 and 81,577.60 is: 112,587.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,239.79 : 200,449.73 = 81,577.60 : x
  2. Step 2: Convert to fraction form
    145,239.79/200,449.73 = 81,577.60/x
  3. Step 3: Cross multiply
    145,239.79x = 200,449.73 × 81,577.60
  4. Step 4: Simplify right side
    145,239.79x = 16,352,207,894.05
  5. Step 5: Solve for x
    x = 16,352,207,894.05/145,239.79
  6. Step 6: Final answer
    x = 112,587.66

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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.