Home / 145,496.48-200,785.28-81,834.40

Finding the Fourth Proportional to 145,496.48, 200,785.28 and 81,834.40

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Solution

The fourth proportional to 145,496.48, 200,785.28 and 81,834.40 is: 112,931.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,496.48 : 200,785.28 = 81,834.40 : x
  2. Step 2: Convert to fraction form
    145,496.48/200,785.28 = 81,834.40/x
  3. Step 3: Cross multiply
    145,496.48x = 200,785.28 × 81,834.40
  4. Step 4: Simplify right side
    145,496.48x = 16,431,142,917.63
  5. Step 5: Solve for x
    x = 16,431,142,917.63/145,496.48
  6. Step 6: Final answer
    x = 112,931.55

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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.