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Finding the Fourth Proportional to 101,133.60, 139,564.80 and 55,810.80

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Solution

The fourth proportional to 101,133.60, 139,564.80 and 55,810.80 is: 77,019.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,133.60 : 139,564.80 = 55,810.80 : x
  2. Step 2: Convert to fraction form
    101,133.60/139,564.80 = 55,810.80/x
  3. Step 3: Cross multiply
    101,133.60x = 139,564.80 × 55,810.80
  4. Step 4: Simplify right side
    101,133.60x = 7,789,223,139.84
  5. Step 5: Solve for x
    x = 7,789,223,139.84/101,133.60
  6. Step 6: Final answer
    x = 77,019.14

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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.