Home / 102,085.36-153,128.01-31,970.14

Finding the Fourth Proportional to 102,085.36, 153,128.01 and 31,970.14

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Solution

The fourth proportional to 102,085.36, 153,128.01 and 31,970.14 is: 47,955.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,085.36 : 153,128.01 = 31,970.14 : x
  2. Step 2: Convert to fraction form
    102,085.36/153,128.01 = 31,970.14/x
  3. Step 3: Cross multiply
    102,085.36x = 153,128.01 × 31,970.14
  4. Step 4: Simplify right side
    102,085.36x = 4,895,523,917.62
  5. Step 5: Solve for x
    x = 4,895,523,917.62/102,085.36
  6. Step 6: Final answer
    x = 47,955.20

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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.