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Finding the Fourth Proportional to 153,548.61, 211,903.61 and 85,565.67

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Solution

The fourth proportional to 153,548.61, 211,903.61 and 85,565.67 is: 118,084.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,548.61 : 211,903.61 = 85,565.67 : x
  2. Step 2: Convert to fraction form
    153,548.61/211,903.61 = 85,565.67/x
  3. Step 3: Cross multiply
    153,548.61x = 211,903.61 × 85,565.67
  4. Step 4: Simplify right side
    153,548.61x = 18,131,674,365.07
  5. Step 5: Solve for x
    x = 18,131,674,365.07/153,548.61
  6. Step 6: Final answer
    x = 118,084.26

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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.