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Finding the Fourth Proportional to 152,777.80, 210,830.18 and 84,790.78

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Solution

The fourth proportional to 152,777.80, 210,830.18 and 84,790.78 is: 117,009.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,777.80 : 210,830.18 = 84,790.78 : x
  2. Step 2: Convert to fraction form
    152,777.80/210,830.18 = 84,790.78/x
  3. Step 3: Cross multiply
    152,777.80x = 210,830.18 × 84,790.78
  4. Step 4: Simplify right side
    152,777.80x = 17,876,455,409.74
  5. Step 5: Solve for x
    x = 17,876,455,409.74/152,777.80
  6. Step 6: Final answer
    x = 117,009.51

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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.