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Finding the Fourth Proportional to 101,602.63, 140,212.76 and 56,281.31

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Solution

The fourth proportional to 101,602.63, 140,212.76 and 56,281.31 is: 77,668.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,602.63 : 140,212.76 = 56,281.31 : x
  2. Step 2: Convert to fraction form
    101,602.63/140,212.76 = 56,281.31/x
  3. Step 3: Cross multiply
    101,602.63x = 140,212.76 × 56,281.31
  4. Step 4: Simplify right side
    101,602.63x = 7,891,357,179.58
  5. Step 5: Solve for x
    x = 7,891,357,179.58/101,602.63
  6. Step 6: Final answer
    x = 77,668.83

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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.