Home / 129,316.69-178,430.27-75,591.31

Finding the Fourth Proportional to 129,316.69, 178,430.27 and 75,591.31

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Solution

The fourth proportional to 129,316.69, 178,430.27 and 75,591.31 is: 104,300.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,316.69 : 178,430.27 = 75,591.31 : x
  2. Step 2: Convert to fraction form
    129,316.69/178,430.27 = 75,591.31/x
  3. Step 3: Cross multiply
    129,316.69x = 178,430.27 × 75,591.31
  4. Step 4: Simplify right side
    129,316.69x = 13,487,777,852.95
  5. Step 5: Solve for x
    x = 13,487,777,852.95/129,316.69
  6. Step 6: Final answer
    x = 104,300.36

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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.