Home / 112,490.40-168,658.80-42,359.20

Finding the Fourth Proportional to 112,490.40, 168,658.80 and 42,359.20

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Solution

The fourth proportional to 112,490.40, 168,658.80 and 42,359.20 is: 63,509.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,490.40 : 168,658.80 = 42,359.20 : x
  2. Step 2: Convert to fraction form
    112,490.40/168,658.80 = 42,359.20/x
  3. Step 3: Cross multiply
    112,490.40x = 168,658.80 × 42,359.20
  4. Step 4: Simplify right side
    112,490.40x = 7,144,251,840.96
  5. Step 5: Solve for x
    x = 7,144,251,840.96/112,490.40
  6. Step 6: Final answer
    x = 63,509.88

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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.