Home / 155,143.20-232,714.80-138,412.65

Finding the Fourth Proportional to 155,143.20, 232,714.80 and 138,412.65

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Solution

The fourth proportional to 155,143.20, 232,714.80 and 138,412.65 is: 207,618.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,143.20 : 232,714.80 = 138,412.65 : x
  2. Step 2: Convert to fraction form
    155,143.20/232,714.80 = 138,412.65/x
  3. Step 3: Cross multiply
    155,143.20x = 232,714.80 × 138,412.65
  4. Step 4: Simplify right side
    155,143.20x = 32,210,672,162.22
  5. Step 5: Solve for x
    x = 32,210,672,162.22/155,143.20
  6. Step 6: Final answer
    x = 207,618.98

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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.