Home / 145,543.90-200,850.55-81,011.74

Finding the Fourth Proportional to 145,543.90, 200,850.55 and 81,011.74

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Solution

The fourth proportional to 145,543.90, 200,850.55 and 81,011.74 is: 111,796.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,543.90 : 200,850.55 = 81,011.74 : x
  2. Step 2: Convert to fraction form
    145,543.90/200,850.55 = 81,011.74/x
  3. Step 3: Cross multiply
    145,543.90x = 200,850.55 × 81,011.74
  4. Step 4: Simplify right side
    145,543.90x = 16,271,252,130.40
  5. Step 5: Solve for x
    x = 16,271,252,130.40/145,543.90
  6. Step 6: Final answer
    x = 111,796.18

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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.