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Finding the Fourth Proportional to 157,999.80, 236,999.70 and 102,012.60

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Solution

The fourth proportional to 157,999.80, 236,999.70 and 102,012.60 is: 153,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,999.80 : 236,999.70 = 102,012.60 : x
  2. Step 2: Convert to fraction form
    157,999.80/236,999.70 = 102,012.60/x
  3. Step 3: Cross multiply
    157,999.80x = 236,999.70 × 102,012.60
  4. Step 4: Simplify right side
    157,999.80x = 24,176,955,596.22
  5. Step 5: Solve for x
    x = 24,176,955,596.22/157,999.80
  6. Step 6: Final answer
    x = 153,018.90

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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.