Home / 169,155.10-253,031.45-128,869.28

Finding the Fourth Proportional to 169,155.10, 253,031.45 and 128,869.28

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Solution

The fourth proportional to 169,155.10, 253,031.45 and 128,869.28 is: 192,769.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,155.10 : 253,031.45 = 128,869.28 : x
  2. Step 2: Convert to fraction form
    169,155.10/253,031.45 = 128,869.28/x
  3. Step 3: Cross multiply
    169,155.10x = 253,031.45 × 128,869.28
  4. Step 4: Simplify right side
    169,155.10x = 32,607,979,818.22
  5. Step 5: Solve for x
    x = 32,607,979,818.22/169,155.10
  6. Step 6: Final answer
    x = 192,769.71

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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.