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Finding the Fourth Proportional to 101,159.79, 139,579.67 and 58,130.97

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Solution

The fourth proportional to 101,159.79, 139,579.67 and 58,130.97 is: 80,208.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,159.79 : 139,579.67 = 58,130.97 : x
  2. Step 2: Convert to fraction form
    101,159.79/139,579.67 = 58,130.97/x
  3. Step 3: Cross multiply
    101,159.79x = 139,579.67 × 58,130.97
  4. Step 4: Simplify right side
    101,159.79x = 8,113,901,609.38
  5. Step 5: Solve for x
    x = 8,113,901,609.38/101,159.79
  6. Step 6: Final answer
    x = 80,208.76

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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.