Home / 144,985.16-200,079.78-81,322.76

Finding the Fourth Proportional to 144,985.16, 200,079.78 and 81,322.76

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Solution

The fourth proportional to 144,985.16, 200,079.78 and 81,322.76 is: 112,225.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,985.16 : 200,079.78 = 81,322.76 : x
  2. Step 2: Convert to fraction form
    144,985.16/200,079.78 = 81,322.76/x
  3. Step 3: Cross multiply
    144,985.16x = 200,079.78 × 81,322.76
  4. Step 4: Simplify right side
    144,985.16x = 16,271,039,929.79
  5. Step 5: Solve for x
    x = 16,271,039,929.79/144,985.16
  6. Step 6: Final answer
    x = 112,225.55

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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.