Home / 118,681,721.80-178,022,582.70-72,765,219.40

Finding the Fourth Proportional to 118,681,721.80, 178,022,582.70 and 72,765,219.40

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Solution

The fourth proportional to 118,681,721.80, 178,022,582.70 and 72,765,219.40 is: 109,147,829.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,681,721.80 : 178,022,582.70 = 72,765,219.40 : x
  2. Step 2: Convert to fraction form
    118,681,721.80/178,022,582.70 = 72,765,219.40/x
  3. Step 3: Cross multiply
    118,681,721.80x = 178,022,582.70 × 72,765,219.40
  4. Step 4: Simplify right side
    118,681,721.80x = 12,953,852,288,320,144
  5. Step 5: Solve for x
    x = 12,953,852,288,320,144/118,681,721.80
  6. Step 6: Final answer
    x = 109,147,829.10

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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.