Home / 155,319.12-213,025.14-153,478.80

Finding the Fourth Proportional to 155,319.12, 213,025.14 and 153,478.80

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Solution

The fourth proportional to 155,319.12, 213,025.14 and 153,478.80 is: 210,501.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,319.12 : 213,025.14 = 153,478.80 : x
  2. Step 2: Convert to fraction form
    155,319.12/213,025.14 = 153,478.80/x
  3. Step 3: Cross multiply
    155,319.12x = 213,025.14 × 153,478.80
  4. Step 4: Simplify right side
    155,319.12x = 32,694,842,857.03
  5. Step 5: Solve for x
    x = 32,694,842,857.03/155,319.12
  6. Step 6: Final answer
    x = 210,501.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.