Home / 207,139,430.40-310,709,145.60-105,217,843.20

Finding the Fourth Proportional to 207,139,430.40, 310,709,145.60 and 105,217,843.20

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Solution

The fourth proportional to 207,139,430.40, 310,709,145.60 and 105,217,843.20 is: 157,826,764.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,139,430.40 : 310,709,145.60 = 105,217,843.20 : x
  2. Step 2: Convert to fraction form
    207,139,430.40/310,709,145.60 = 105,217,843.20/x
  3. Step 3: Cross multiply
    207,139,430.40x = 310,709,145.60 × 105,217,843.20
  4. Step 4: Simplify right side
    207,139,430.40x = 32,692,146,162,546,772
  5. Step 5: Solve for x
    x = 32,692,146,162,546,772/207,139,430.40
  6. Step 6: Final answer
    x = 157,826,764.80

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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.