Home / 145,170.51-200,332.35-81,508.29

Finding the Fourth Proportional to 145,170.51, 200,332.35 and 81,508.29

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Solution

The fourth proportional to 145,170.51, 200,332.35 and 81,508.29 is: 112,479.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,170.51 : 200,332.35 = 81,508.29 : x
  2. Step 2: Convert to fraction form
    145,170.51/200,332.35 = 81,508.29/x
  3. Step 3: Cross multiply
    145,170.51x = 200,332.35 × 81,508.29
  4. Step 4: Simplify right side
    145,170.51x = 16,328,747,280.18
  5. Step 5: Solve for x
    x = 16,328,747,280.18/145,170.51
  6. Step 6: Final answer
    x = 112,479.78

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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.