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Finding the Fourth Proportional to 101,359.38, 139,875.21 and 56,039.34

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Solution

The fourth proportional to 101,359.38, 139,875.21 and 56,039.34 is: 77,333.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,359.38 : 139,875.21 = 56,039.34 : x
  2. Step 2: Convert to fraction form
    101,359.38/139,875.21 = 56,039.34/x
  3. Step 3: Cross multiply
    101,359.38x = 139,875.21 × 56,039.34
  4. Step 4: Simplify right side
    101,359.38x = 7,838,514,450.76
  5. Step 5: Solve for x
    x = 7,838,514,450.76/101,359.38
  6. Step 6: Final answer
    x = 77,333.88

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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.