Home / 156,913.20-235,369.80-145,393.20

Finding the Fourth Proportional to 156,913.20, 235,369.80 and 145,393.20

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Solution

The fourth proportional to 156,913.20, 235,369.80 and 145,393.20 is: 218,089.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,913.20 : 235,369.80 = 145,393.20 : x
  2. Step 2: Convert to fraction form
    156,913.20/235,369.80 = 145,393.20/x
  3. Step 3: Cross multiply
    156,913.20x = 235,369.80 × 145,393.20
  4. Step 4: Simplify right side
    156,913.20x = 34,221,168,405.36
  5. Step 5: Solve for x
    x = 34,221,168,405.36/156,913.20
  6. Step 6: Final answer
    x = 218,089.80

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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.