Home / 102,287.16-153,432.36-31,211.28

Finding the Fourth Proportional to 102,287.16, 153,432.36 and 31,211.28

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Solution

The fourth proportional to 102,287.16, 153,432.36 and 31,211.28 is: 46,817.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,287.16 : 153,432.36 = 31,211.28 : x
  2. Step 2: Convert to fraction form
    102,287.16/153,432.36 = 31,211.28/x
  3. Step 3: Cross multiply
    102,287.16x = 153,432.36 × 31,211.28
  4. Step 4: Simplify right side
    102,287.16x = 4,788,820,349.02
  5. Step 5: Solve for x
    x = 4,788,820,349.02/102,287.16
  6. Step 6: Final answer
    x = 46,817.41

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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.