Home / 145,141.88-200,282.10-81,467.24

Finding the Fourth Proportional to 145,141.88, 200,282.10 and 81,467.24

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Solution

The fourth proportional to 145,141.88, 200,282.10 and 81,467.24 is: 112,417.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,141.88 : 200,282.10 = 81,467.24 : x
  2. Step 2: Convert to fraction form
    145,141.88/200,282.10 = 81,467.24/x
  3. Step 3: Cross multiply
    145,141.88x = 200,282.10 × 81,467.24
  4. Step 4: Simplify right side
    145,141.88x = 16,316,429,908.40
  5. Step 5: Solve for x
    x = 16,316,429,908.40/145,141.88
  6. Step 6: Final answer
    x = 112,417.10

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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.