Home / 153,129.76-211,308.24-86,071.84

Finding the Fourth Proportional to 153,129.76, 211,308.24 and 86,071.84

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Solution

The fourth proportional to 153,129.76, 211,308.24 and 86,071.84 is: 118,773.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,129.76 : 211,308.24 = 86,071.84 : x
  2. Step 2: Convert to fraction form
    153,129.76/211,308.24 = 86,071.84/x
  3. Step 3: Cross multiply
    153,129.76x = 211,308.24 × 86,071.84
  4. Step 4: Simplify right side
    153,129.76x = 18,187,689,023.96
  5. Step 5: Solve for x
    x = 18,187,689,023.96/153,129.76
  6. Step 6: Final answer
    x = 118,773.05

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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.