Home / 145,015.84-200,124.96-81,358.24

Finding the Fourth Proportional to 145,015.84, 200,124.96 and 81,358.24

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Solution

The fourth proportional to 145,015.84, 200,124.96 and 81,358.24 is: 112,276.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,015.84 : 200,124.96 = 81,358.24 : x
  2. Step 2: Convert to fraction form
    145,015.84/200,124.96 = 81,358.24/x
  3. Step 3: Cross multiply
    145,015.84x = 200,124.96 × 81,358.24
  4. Step 4: Simplify right side
    145,015.84x = 16,281,814,525.67
  5. Step 5: Solve for x
    x = 16,281,814,525.67/145,015.84
  6. Step 6: Final answer
    x = 112,276.11

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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.