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Finding the Fourth Proportional to 161,197.60, 241,681.20 and 72,378.40

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Solution

The fourth proportional to 161,197.60, 241,681.20 and 72,378.40 is: 108,515.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,197.60 : 241,681.20 = 72,378.40 : x
  2. Step 2: Convert to fraction form
    161,197.60/241,681.20 = 72,378.40/x
  3. Step 3: Cross multiply
    161,197.60x = 241,681.20 × 72,378.40
  4. Step 4: Simplify right side
    161,197.60x = 17,492,498,566.08
  5. Step 5: Solve for x
    x = 17,492,498,566.08/161,197.60
  6. Step 6: Final answer
    x = 108,515.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.