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Finding the Fourth Proportional to 101,685.48, 140,278.50 and 63,980.52

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Solution

The fourth proportional to 101,685.48, 140,278.50 and 63,980.52 is: 88,263.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,685.48 : 140,278.50 = 63,980.52 : x
  2. Step 2: Convert to fraction form
    101,685.48/140,278.50 = 63,980.52/x
  3. Step 3: Cross multiply
    101,685.48x = 140,278.50 × 63,980.52
  4. Step 4: Simplify right side
    101,685.48x = 8,975,091,374.82
  5. Step 5: Solve for x
    x = 8,975,091,374.82/101,685.48
  6. Step 6: Final answer
    x = 88,263.25

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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.