Home / 99,840.32-149,680.80-57,672.32

Finding the Fourth Proportional to 99,840.32, 149,680.80 and 57,672.32

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Solution

The fourth proportional to 99,840.32, 149,680.80 and 57,672.32 is: 86,462.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,840.32 : 149,680.80 = 57,672.32 : x
  2. Step 2: Convert to fraction form
    99,840.32/149,680.80 = 57,672.32/x
  3. Step 3: Cross multiply
    99,840.32x = 149,680.80 × 57,672.32
  4. Step 4: Simplify right side
    99,840.32x = 8,632,438,995.46
  5. Step 5: Solve for x
    x = 8,632,438,995.46/99,840.32
  6. Step 6: Final answer
    x = 86,462.45

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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.