Home / 102,139.76-153,284.34-52,261.58

Finding the Fourth Proportional to 102,139.76, 153,284.34 and 52,261.58

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Solution

The fourth proportional to 102,139.76, 153,284.34 and 52,261.58 is: 78,430.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,139.76 : 153,284.34 = 52,261.58 : x
  2. Step 2: Convert to fraction form
    102,139.76/153,284.34 = 52,261.58/x
  3. Step 3: Cross multiply
    102,139.76x = 153,284.34 × 52,261.58
  4. Step 4: Simplify right side
    102,139.76x = 8,010,881,031.24
  5. Step 5: Solve for x
    x = 8,010,881,031.24/102,139.76
  6. Step 6: Final answer
    x = 78,430.59

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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.