Home / 102,105.04-140,884.73-61,822.55

Finding the Fourth Proportional to 102,105.04, 140,884.73 and 61,822.55

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Solution

The fourth proportional to 102,105.04, 140,884.73 and 61,822.55 is: 85,302.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,105.04 : 140,884.73 = 61,822.55 : x
  2. Step 2: Convert to fraction form
    102,105.04/140,884.73 = 61,822.55/x
  3. Step 3: Cross multiply
    102,105.04x = 140,884.73 × 61,822.55
  4. Step 4: Simplify right side
    102,105.04x = 8,709,853,264.66
  5. Step 5: Solve for x
    x = 8,709,853,264.66/102,105.04
  6. Step 6: Final answer
    x = 85,302.87

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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.