Home / 145,543.63-200,849.91-81,881.50

Finding the Fourth Proportional to 145,543.63, 200,849.91 and 81,881.50

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Solution

The fourth proportional to 145,543.63, 200,849.91 and 81,881.50 is: 112,996.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,543.63 : 200,849.91 = 81,881.50 : x
  2. Step 2: Convert to fraction form
    145,543.63/200,849.91 = 81,881.50/x
  3. Step 3: Cross multiply
    145,543.63x = 200,849.91 × 81,881.50
  4. Step 4: Simplify right side
    145,543.63x = 16,445,891,905.67
  5. Step 5: Solve for x
    x = 16,445,891,905.67/145,543.63
  6. Step 6: Final answer
    x = 112,996.30

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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.