Home / 153,118.85-229,724.89-78,291.55

Finding the Fourth Proportional to 153,118.85, 229,724.89 and 78,291.55

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Solution

The fourth proportional to 153,118.85, 229,724.89 and 78,291.55 is: 117,461.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,118.85 : 229,724.89 = 78,291.55 : x
  2. Step 2: Convert to fraction form
    153,118.85/229,724.89 = 78,291.55/x
  3. Step 3: Cross multiply
    153,118.85x = 229,724.89 × 78,291.55
  4. Step 4: Simplify right side
    153,118.85x = 17,985,516,941.64
  5. Step 5: Solve for x
    x = 17,985,516,941.64/153,118.85
  6. Step 6: Final answer
    x = 117,461.16

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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.