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Finding the Fourth Proportional to 191,955.55, 288,062.93 and 107,715.55

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Solution

The fourth proportional to 191,955.55, 288,062.93 and 107,715.55 is: 161,646.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,955.55 : 288,062.93 = 107,715.55 : x
  2. Step 2: Convert to fraction form
    191,955.55/288,062.93 = 107,715.55/x
  3. Step 3: Cross multiply
    191,955.55x = 288,062.93 × 107,715.55
  4. Step 4: Simplify right side
    191,955.55x = 31,028,856,400.98
  5. Step 5: Solve for x
    x = 31,028,856,400.98/191,955.55
  6. Step 6: Final answer
    x = 161,646.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.