Home / 101,123.29-139,549.19-55,801.66

Finding the Fourth Proportional to 101,123.29, 139,549.19 and 55,801.66

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Solution

The fourth proportional to 101,123.29, 139,549.19 and 55,801.66 is: 77,005.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,123.29 : 139,549.19 = 55,801.66 : x
  2. Step 2: Convert to fraction form
    101,123.29/139,549.19 = 55,801.66/x
  3. Step 3: Cross multiply
    101,123.29x = 139,549.19 × 55,801.66
  4. Step 4: Simplify right side
    101,123.29x = 7,787,076,453.66
  5. Step 5: Solve for x
    x = 7,787,076,453.66/101,123.29
  6. Step 6: Final answer
    x = 77,005.77

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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.