Home / 145,253.12-200,469.48-81,595.76

Finding the Fourth Proportional to 145,253.12, 200,469.48 and 81,595.76

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Solution

The fourth proportional to 145,253.12, 200,469.48 and 81,595.76 is: 112,613.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,253.12 : 200,469.48 = 81,595.76 : x
  2. Step 2: Convert to fraction form
    145,253.12/200,469.48 = 81,595.76/x
  3. Step 3: Cross multiply
    145,253.12x = 200,469.48 × 81,595.76
  4. Step 4: Simplify right side
    145,253.12x = 16,357,459,577.40
  5. Step 5: Solve for x
    x = 16,357,459,577.40/145,253.12
  6. Step 6: Final answer
    x = 112,613.48

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1.5x scale

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.