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Finding the Fourth Proportional to 152,400.98, 210,267.86 and 98,600.78

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Solution

The fourth proportional to 152,400.98, 210,267.86 and 98,600.78 is: 136,039.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,400.98 : 210,267.86 = 98,600.78 : x
  2. Step 2: Convert to fraction form
    152,400.98/210,267.86 = 98,600.78/x
  3. Step 3: Cross multiply
    152,400.98x = 210,267.86 × 98,600.78
  4. Step 4: Simplify right side
    152,400.98x = 20,732,575,037.60
  5. Step 5: Solve for x
    x = 20,732,575,037.60/152,400.98
  6. Step 6: Final answer
    x = 136,039.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.