Home / 130,687,430.40-196,031,145.60-87,689,260.80

Finding the Fourth Proportional to 130,687,430.40, 196,031,145.60 and 87,689,260.80

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Solution

The fourth proportional to 130,687,430.40, 196,031,145.60 and 87,689,260.80 is: 131,533,891.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,687,430.40 : 196,031,145.60 = 87,689,260.80 : x
  2. Step 2: Convert to fraction form
    130,687,430.40/196,031,145.60 = 87,689,260.80/x
  3. Step 3: Cross multiply
    130,687,430.40x = 196,031,145.60 × 87,689,260.80
  4. Step 4: Simplify right side
    130,687,430.40x = 17,189,826,251,441,172
  5. Step 5: Solve for x
    x = 17,189,826,251,441,172/130,687,430.40
  6. Step 6: Final answer
    x = 131,533,891.20

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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.