Home / 180,807.34-249,514.10-100,234.66

Finding the Fourth Proportional to 180,807.34, 249,514.10 and 100,234.66

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Solution

The fourth proportional to 180,807.34, 249,514.10 and 100,234.66 is: 138,323.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,807.34 : 249,514.10 = 100,234.66 : x
  2. Step 2: Convert to fraction form
    180,807.34/249,514.10 = 100,234.66/x
  3. Step 3: Cross multiply
    180,807.34x = 249,514.10 × 100,234.66
  4. Step 4: Simplify right side
    180,807.34x = 25,009,960,978.71
  5. Step 5: Solve for x
    x = 25,009,960,978.71/180,807.34
  6. Step 6: Final answer
    x = 138,323.81

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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.