Home / 127,913.60-191,870.40-72,617.60

Finding the Fourth Proportional to 127,913.60, 191,870.40 and 72,617.60

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Solution

The fourth proportional to 127,913.60, 191,870.40 and 72,617.60 is: 108,926.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,913.60 : 191,870.40 = 72,617.60 : x
  2. Step 2: Convert to fraction form
    127,913.60/191,870.40 = 72,617.60/x
  3. Step 3: Cross multiply
    127,913.60x = 191,870.40 × 72,617.60
  4. Step 4: Simplify right side
    127,913.60x = 13,933,167,959.04
  5. Step 5: Solve for x
    x = 13,933,167,959.04/127,913.60
  6. Step 6: Final answer
    x = 108,926.40

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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.