Home / 90,858.08-136,199.64-55,807.76

Finding the Fourth Proportional to 90,858.08, 136,199.64 and 55,807.76

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Solution

The fourth proportional to 90,858.08, 136,199.64 and 55,807.76 is: 83,657.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,858.08 : 136,199.64 = 55,807.76 : x
  2. Step 2: Convert to fraction form
    90,858.08/136,199.64 = 55,807.76/x
  3. Step 3: Cross multiply
    90,858.08x = 136,199.64 × 55,807.76
  4. Step 4: Simplify right side
    90,858.08x = 7,600,996,821.21
  5. Step 5: Solve for x
    x = 7,600,996,821.21/90,858.08
  6. Step 6: Final answer
    x = 83,657.91

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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.