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Finding the Fourth Proportional to 152,653.60, 228,980.40 and 128,159.20

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Solution

The fourth proportional to 152,653.60, 228,980.40 and 128,159.20 is: 192,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,653.60 : 228,980.40 = 128,159.20 : x
  2. Step 2: Convert to fraction form
    152,653.60/228,980.40 = 128,159.20/x
  3. Step 3: Cross multiply
    152,653.60x = 228,980.40 × 128,159.20
  4. Step 4: Simplify right side
    152,653.60x = 29,345,944,879.68
  5. Step 5: Solve for x
    x = 29,345,944,879.68/152,653.60
  6. Step 6: Final answer
    x = 192,238.80

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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.