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Finding the Fourth Proportional to 103,785.16, 143,223.80 and 60,186.16

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Solution

The fourth proportional to 103,785.16, 143,223.80 and 60,186.16 is: 83,057.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,785.16 : 143,223.80 = 60,186.16 : x
  2. Step 2: Convert to fraction form
    103,785.16/143,223.80 = 60,186.16/x
  3. Step 3: Cross multiply
    103,785.16x = 143,223.80 × 60,186.16
  4. Step 4: Simplify right side
    103,785.16x = 8,620,090,542.61
  5. Step 5: Solve for x
    x = 8,620,090,542.61/103,785.16
  6. Step 6: Final answer
    x = 83,057.06

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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.