Home / 142,592,817.80-196,772,419.86-80,725,989.80

Finding the Fourth Proportional to 142,592,817.80, 196,772,419.86 and 80,725,989.80

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Solution

The fourth proportional to 142,592,817.80, 196,772,419.86 and 80,725,989.80 is: 111,398,656.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,592,817.80 : 196,772,419.86 = 80,725,989.80 : x
  2. Step 2: Convert to fraction form
    142,592,817.80/196,772,419.86 = 80,725,989.80/x
  3. Step 3: Cross multiply
    142,592,817.80x = 196,772,419.86 × 80,725,989.80
  4. Step 4: Simplify right side
    142,592,817.80x = 15,884,648,358,539,678
  5. Step 5: Solve for x
    x = 15,884,648,358,539,678/142,592,817.80
  6. Step 6: Final answer
    x = 111,398,656.70

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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.