Home / 145,459.08-200,749.86-81,795.24

Finding the Fourth Proportional to 145,459.08, 200,749.86 and 81,795.24

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Solution

The fourth proportional to 145,459.08, 200,749.86 and 81,795.24 is: 112,886.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,459.08 : 200,749.86 = 81,795.24 : x
  2. Step 2: Convert to fraction form
    145,459.08/200,749.86 = 81,795.24/x
  3. Step 3: Cross multiply
    145,459.08x = 200,749.86 × 81,795.24
  4. Step 4: Simplify right side
    145,459.08x = 16,420,382,978.67
  5. Step 5: Solve for x
    x = 16,420,382,978.67/145,459.08
  6. Step 6: Final answer
    x = 112,886.61

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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.