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Finding the Fourth Proportional to 153,279.54, 211,522.35 and 85,293.93

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Solution

The fourth proportional to 153,279.54, 211,522.35 and 85,293.93 is: 117,703.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,279.54 : 211,522.35 = 85,293.93 : x
  2. Step 2: Convert to fraction form
    153,279.54/211,522.35 = 85,293.93/x
  3. Step 3: Cross multiply
    153,279.54x = 211,522.35 × 85,293.93
  4. Step 4: Simplify right side
    153,279.54x = 18,041,572,514.34
  5. Step 5: Solve for x
    x = 18,041,572,514.34/153,279.54
  6. Step 6: Final answer
    x = 117,703.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.