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Finding the Fourth Proportional to 104,200.64, 143,780.64 and 61,752.32

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Solution

The fourth proportional to 104,200.64, 143,780.64 and 61,752.32 is: 85,208.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,200.64 : 143,780.64 = 61,752.32 : x
  2. Step 2: Convert to fraction form
    104,200.64/143,780.64 = 61,752.32/x
  3. Step 3: Cross multiply
    104,200.64x = 143,780.64 × 61,752.32
  4. Step 4: Simplify right side
    104,200.64x = 8,878,788,091.08
  5. Step 5: Solve for x
    x = 8,878,788,091.08/104,200.64
  6. Step 6: Final answer
    x = 85,208.58

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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.