Home / 142,636,015.20-196,838,427.06-80,768,409.60

Finding the Fourth Proportional to 142,636,015.20, 196,838,427.06 and 80,768,409.60

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Solution

The fourth proportional to 142,636,015.20, 196,838,427.06 and 80,768,409.60 is: 111,460,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,636,015.20 : 196,838,427.06 = 80,768,409.60 : x
  2. Step 2: Convert to fraction form
    142,636,015.20/196,838,427.06 = 80,768,409.60/x
  3. Step 3: Cross multiply
    142,636,015.20x = 196,838,427.06 × 80,768,409.60
  4. Step 4: Simplify right side
    142,636,015.20x = 15,898,326,701,801,802
  5. Step 5: Solve for x
    x = 15,898,326,701,801,802/142,636,015.20
  6. Step 6: Final answer
    x = 111,460,816.40

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1.5x scale

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.