Home / 130,685.40-180,386.46-103,875.48

Finding the Fourth Proportional to 130,685.40, 180,386.46 and 103,875.48

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Solution

The fourth proportional to 130,685.40, 180,386.46 and 103,875.48 is: 143,380.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,685.40 : 180,386.46 = 103,875.48 : x
  2. Step 2: Convert to fraction form
    130,685.40/180,386.46 = 103,875.48/x
  3. Step 3: Cross multiply
    130,685.40x = 180,386.46 × 103,875.48
  4. Step 4: Simplify right side
    130,685.40x = 18,737,730,118.00
  5. Step 5: Solve for x
    x = 18,737,730,118.00/130,685.40
  6. Step 6: Final answer
    x = 143,380.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.