Home / 138,622.48-191,299.04-74,960.28

Finding the Fourth Proportional to 138,622.48, 191,299.04 and 74,960.28

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Solution

The fourth proportional to 138,622.48, 191,299.04 and 74,960.28 is: 103,445.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,622.48 : 191,299.04 = 74,960.28 : x
  2. Step 2: Convert to fraction form
    138,622.48/191,299.04 = 74,960.28/x
  3. Step 3: Cross multiply
    138,622.48x = 191,299.04 × 74,960.28
  4. Step 4: Simplify right side
    138,622.48x = 14,339,829,602.13
  5. Step 5: Solve for x
    x = 14,339,829,602.13/138,622.48
  6. Step 6: Final answer
    x = 103,445.20

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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.