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Finding the Fourth Proportional to 101,659.92, 140,291.28 and 56,339.16

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Solution

The fourth proportional to 101,659.92, 140,291.28 and 56,339.16 is: 77,748.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,659.92 : 140,291.28 = 56,339.16 : x
  2. Step 2: Convert to fraction form
    101,659.92/140,291.28 = 56,339.16/x
  3. Step 3: Cross multiply
    101,659.92x = 140,291.28 × 56,339.16
  4. Step 4: Simplify right side
    101,659.92x = 7,903,892,870.52
  5. Step 5: Solve for x
    x = 7,903,892,870.52/101,659.92
  6. Step 6: Final answer
    x = 77,748.37

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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.