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Finding the Fourth Proportional to 163,307.88, 225,365.76 and 91,688.76

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Solution

The fourth proportional to 163,307.88, 225,365.76 and 91,688.76 is: 126,530.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,307.88 : 225,365.76 = 91,688.76 : x
  2. Step 2: Convert to fraction form
    163,307.88/225,365.76 = 91,688.76/x
  3. Step 3: Cross multiply
    163,307.88x = 225,365.76 × 91,688.76
  4. Step 4: Simplify right side
    163,307.88x = 20,663,507,080.86
  5. Step 5: Solve for x
    x = 20,663,507,080.86/163,307.88
  6. Step 6: Final answer
    x = 126,530.99

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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.