Home / 130,686.20-195,737.70-100,870.10

Finding the Fourth Proportional to 130,686.20, 195,737.70 and 100,870.10

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Solution

The fourth proportional to 130,686.20, 195,737.70 and 100,870.10 is: 151,080.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,686.20 : 195,737.70 = 100,870.10 : x
  2. Step 2: Convert to fraction form
    130,686.20/195,737.70 = 100,870.10/x
  3. Step 3: Cross multiply
    130,686.20x = 195,737.70 × 100,870.10
  4. Step 4: Simplify right side
    130,686.20x = 19,744,081,372.77
  5. Step 5: Solve for x
    x = 19,744,081,372.77/130,686.20
  6. Step 6: Final answer
    x = 151,080.08

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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.