Home / 130,111.70-194,985.30-103,503.20

Finding the Fourth Proportional to 130,111.70, 194,985.30 and 103,503.20

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Solution

The fourth proportional to 130,111.70, 194,985.30 and 103,503.20 is: 155,109.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,111.70 : 194,985.30 = 103,503.20 : x
  2. Step 2: Convert to fraction form
    130,111.70/194,985.30 = 103,503.20/x
  3. Step 3: Cross multiply
    130,111.70x = 194,985.30 × 103,503.20
  4. Step 4: Simplify right side
    130,111.70x = 20,181,602,502.96
  5. Step 5: Solve for x
    x = 20,181,602,502.96/130,111.70
  6. Step 6: Final answer
    x = 155,109.82

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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.