Home / 145,538.18-200,842.35-81,875.96

Finding the Fourth Proportional to 145,538.18, 200,842.35 and 81,875.96

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Solution

The fourth proportional to 145,538.18, 200,842.35 and 81,875.96 is: 112,988.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,538.18 : 200,842.35 = 81,875.96 : x
  2. Step 2: Convert to fraction form
    145,538.18/200,842.35 = 81,875.96/x
  3. Step 3: Cross multiply
    145,538.18x = 200,842.35 × 81,875.96
  4. Step 4: Simplify right side
    145,538.18x = 16,444,160,214.91
  5. Step 5: Solve for x
    x = 16,444,160,214.91/145,538.18
  6. Step 6: Final answer
    x = 112,988.63

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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.