Home / 145,400.17-200,648.55-81,742.09

Finding the Fourth Proportional to 145,400.17, 200,648.55 and 81,742.09

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Solution

The fourth proportional to 145,400.17, 200,648.55 and 81,742.09 is: 112,802.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,400.17 : 200,648.55 = 81,742.09 : x
  2. Step 2: Convert to fraction form
    145,400.17/200,648.55 = 81,742.09/x
  3. Step 3: Cross multiply
    145,400.17x = 200,648.55 × 81,742.09
  4. Step 4: Simplify right side
    145,400.17x = 16,401,431,832.47
  5. Step 5: Solve for x
    x = 16,401,431,832.47/145,400.17
  6. Step 6: Final answer
    x = 112,802.01

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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.