Home / 320,139.83-480,144.13-117,666.16

Finding the Fourth Proportional to 320,139.83, 480,144.13 and 117,666.16

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Solution

The fourth proportional to 320,139.83, 480,144.13 and 117,666.16 is: 176,475.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,139.83 : 480,144.13 = 117,666.16 : x
  2. Step 2: Convert to fraction form
    320,139.83/480,144.13 = 117,666.16/x
  3. Step 3: Cross multiply
    320,139.83x = 480,144.13 × 117,666.16
  4. Step 4: Simplify right side
    320,139.83x = 56,496,714,529.12
  5. Step 5: Solve for x
    x = 56,496,714,529.12/320,139.83
  6. Step 6: Final answer
    x = 176,475.12

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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.