Home / 152,963.49-229,421.55-78,138.93

Finding the Fourth Proportional to 152,963.49, 229,421.55 and 78,138.93

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Solution

The fourth proportional to 152,963.49, 229,421.55 and 78,138.93 is: 117,196.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,963.49 : 229,421.55 = 78,138.93 : x
  2. Step 2: Convert to fraction form
    152,963.49/229,421.55 = 78,138.93/x
  3. Step 3: Cross multiply
    152,963.49x = 229,421.55 × 78,138.93
  4. Step 4: Simplify right side
    152,963.49x = 17,926,754,618.80
  5. Step 5: Solve for x
    x = 17,926,754,618.80/152,963.49
  6. Step 6: Final answer
    x = 117,196.30

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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.