Home / 145,016.10-200,123.58-81,355.26

Finding the Fourth Proportional to 145,016.10, 200,123.58 and 81,355.26

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Solution

The fourth proportional to 145,016.10, 200,123.58 and 81,355.26 is: 112,271.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,016.10 : 200,123.58 = 81,355.26 : x
  2. Step 2: Convert to fraction form
    145,016.10/200,123.58 = 81,355.26/x
  3. Step 3: Cross multiply
    145,016.10x = 200,123.58 × 81,355.26
  4. Step 4: Simplify right side
    145,016.10x = 16,281,105,883.03
  5. Step 5: Solve for x
    x = 16,281,105,883.03/145,016.10
  6. Step 6: Final answer
    x = 112,271.02

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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.