Home / 145,131.83-200,260.14-81,457.32

Finding the Fourth Proportional to 145,131.83, 200,260.14 and 81,457.32

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Solution

The fourth proportional to 145,131.83, 200,260.14 and 81,457.32 is: 112,398.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,131.83 : 200,260.14 = 81,457.32 : x
  2. Step 2: Convert to fraction form
    145,131.83/200,260.14 = 81,457.32/x
  3. Step 3: Cross multiply
    145,131.83x = 200,260.14 × 81,457.32
  4. Step 4: Simplify right side
    145,131.83x = 16,312,654,307.22
  5. Step 5: Solve for x
    x = 16,312,654,307.22/145,131.83
  6. Step 6: Final answer
    x = 112,398.88

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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.