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Finding the Fourth Proportional to 145,263.78, 200,482.70 and 81,601.63

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Solution

The fourth proportional to 145,263.78, 200,482.70 and 81,601.63 is: 112,620.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,263.78 : 200,482.70 = 81,601.63 : x
  2. Step 2: Convert to fraction form
    145,263.78/200,482.70 = 81,601.63/x
  3. Step 3: Cross multiply
    145,263.78x = 200,482.70 × 81,601.63
  4. Step 4: Simplify right side
    145,263.78x = 16,359,714,197.59
  5. Step 5: Solve for x
    x = 16,359,714,197.59/145,263.78
  6. Step 6: Final answer
    x = 112,620.74

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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.