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Finding the Fourth Proportional to 101,418.77, 139,945.48 and 56,090.46

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Solution

The fourth proportional to 101,418.77, 139,945.48 and 56,090.46 is: 77,397.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,418.77 : 139,945.48 = 56,090.46 : x
  2. Step 2: Convert to fraction form
    101,418.77/139,945.48 = 56,090.46/x
  3. Step 3: Cross multiply
    101,418.77x = 139,945.48 × 56,090.46
  4. Step 4: Simplify right side
    101,418.77x = 7,849,606,348.12
  5. Step 5: Solve for x
    x = 7,849,606,348.12/101,418.77
  6. Step 6: Final answer
    x = 77,397.96

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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.