Home / 153,657.34-212,031.61-85,667.93

Finding the Fourth Proportional to 153,657.34, 212,031.61 and 85,667.93

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Solution

The fourth proportional to 153,657.34, 212,031.61 and 85,667.93 is: 118,213.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,657.34 : 212,031.61 = 85,667.93 : x
  2. Step 2: Convert to fraction form
    153,657.34/212,031.61 = 85,667.93/x
  3. Step 3: Cross multiply
    153,657.34x = 212,031.61 × 85,667.93
  4. Step 4: Simplify right side
    153,657.34x = 18,164,308,644.06
  5. Step 5: Solve for x
    x = 18,164,308,644.06/153,657.34
  6. Step 6: Final answer
    x = 118,213.09

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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.