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Finding the Fourth Proportional to 144,117.60, 215,884.80 and 99,794.40

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Solution

The fourth proportional to 144,117.60, 215,884.80 and 99,794.40 is: 149,489.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,117.60 : 215,884.80 = 99,794.40 : x
  2. Step 2: Convert to fraction form
    144,117.60/215,884.80 = 99,794.40/x
  3. Step 3: Cross multiply
    144,117.60x = 215,884.80 × 99,794.40
  4. Step 4: Simplify right side
    144,117.60x = 21,544,094,085.12
  5. Step 5: Solve for x
    x = 21,544,094,085.12/144,117.60
  6. Step 6: Final answer
    x = 149,489.68

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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.