Home / 102,139.58-153,210.45-31,073.79

Finding the Fourth Proportional to 102,139.58, 153,210.45 and 31,073.79

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Solution

The fourth proportional to 102,139.58, 153,210.45 and 31,073.79 is: 46,611.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,139.58 : 153,210.45 = 31,073.79 : x
  2. Step 2: Convert to fraction form
    102,139.58/153,210.45 = 31,073.79/x
  3. Step 3: Cross multiply
    102,139.58x = 153,210.45 × 31,073.79
  4. Step 4: Simplify right side
    102,139.58x = 4,760,829,349.11
  5. Step 5: Solve for x
    x = 4,760,829,349.11/102,139.58
  6. Step 6: Final answer
    x = 46,611.01

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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.