Home / 145,077.55-200,215.90-81,415.35

Finding the Fourth Proportional to 145,077.55, 200,215.90 and 81,415.35

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Solution

The fourth proportional to 145,077.55, 200,215.90 and 81,415.35 is: 112,358.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,077.55 : 200,215.90 = 81,415.35 : x
  2. Step 2: Convert to fraction form
    145,077.55/200,215.90 = 81,415.35/x
  3. Step 3: Cross multiply
    145,077.55x = 200,215.90 × 81,415.35
  4. Step 4: Simplify right side
    145,077.55x = 16,300,647,574.07
  5. Step 5: Solve for x
    x = 16,300,647,574.07/145,077.55
  6. Step 6: Final answer
    x = 112,358.17

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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.