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Finding the Fourth Proportional to 153,235.60, 229,426.80 and 78,193.60

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Solution

The fourth proportional to 153,235.60, 229,426.80 and 78,193.60 is: 117,072.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,235.60 : 229,426.80 = 78,193.60 : x
  2. Step 2: Convert to fraction form
    153,235.60/229,426.80 = 78,193.60/x
  3. Step 3: Cross multiply
    153,235.60x = 229,426.80 × 78,193.60
  4. Step 4: Simplify right side
    153,235.60x = 17,939,707,428.48
  5. Step 5: Solve for x
    x = 17,939,707,428.48/153,235.60
  6. Step 6: Final answer
    x = 117,072.71

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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.