Home / 145,125.64-200,271.72-81,461.80

Finding the Fourth Proportional to 145,125.64, 200,271.72 and 81,461.80

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Solution

The fourth proportional to 145,125.64, 200,271.72 and 81,461.80 is: 112,416.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,125.64 : 200,271.72 = 81,461.80 : x
  2. Step 2: Convert to fraction form
    145,125.64/200,271.72 = 81,461.80/x
  3. Step 3: Cross multiply
    145,125.64x = 200,271.72 × 81,461.80
  4. Step 4: Simplify right side
    145,125.64x = 16,314,494,800.30
  5. Step 5: Solve for x
    x = 16,314,494,800.30/145,125.64
  6. Step 6: Final answer
    x = 112,416.35

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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.