Home / 147,308.68-203,278.74-83,638.12

Finding the Fourth Proportional to 147,308.68, 203,278.74 and 83,638.12

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Solution

The fourth proportional to 147,308.68, 203,278.74 and 83,638.12 is: 115,416.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,308.68 : 203,278.74 = 83,638.12 : x
  2. Step 2: Convert to fraction form
    147,308.68/203,278.74 = 83,638.12/x
  3. Step 3: Cross multiply
    147,308.68x = 203,278.74 × 83,638.12
  4. Step 4: Simplify right side
    147,308.68x = 17,001,851,649.57
  5. Step 5: Solve for x
    x = 17,001,851,649.57/147,308.68
  6. Step 6: Final answer
    x = 115,416.50

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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.