Home / 153,456.39-211,779.50-86,392.71

Finding the Fourth Proportional to 153,456.39, 211,779.50 and 86,392.71

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Solution

The fourth proportional to 153,456.39, 211,779.50 and 86,392.71 is: 119,227.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,456.39 : 211,779.50 = 86,392.71 : x
  2. Step 2: Convert to fraction form
    153,456.39/211,779.50 = 86,392.71/x
  3. Step 3: Cross multiply
    153,456.39x = 211,779.50 × 86,392.71
  4. Step 4: Simplify right side
    153,456.39x = 18,296,204,495.48
  5. Step 5: Solve for x
    x = 18,296,204,495.48/153,456.39
  6. Step 6: Final answer
    x = 119,227.39

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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.