Home / 90,201.32-124,482.66-56,678.12

Finding the Fourth Proportional to 90,201.32, 124,482.66 and 56,678.12

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Solution

The fourth proportional to 90,201.32, 124,482.66 and 56,678.12 is: 78,218.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,201.32 : 124,482.66 = 56,678.12 : x
  2. Step 2: Convert to fraction form
    90,201.32/124,482.66 = 56,678.12/x
  3. Step 3: Cross multiply
    90,201.32x = 124,482.66 × 56,678.12
  4. Step 4: Simplify right side
    90,201.32x = 7,055,443,141.40
  5. Step 5: Solve for x
    x = 7,055,443,141.40/90,201.32
  6. Step 6: Final answer
    x = 78,218.85

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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.