Home / 126,870,688.80-190,306,033.20-120,320,186.40

Finding the Fourth Proportional to 126,870,688.80, 190,306,033.20 and 120,320,186.40

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Solution

The fourth proportional to 126,870,688.80, 190,306,033.20 and 120,320,186.40 is: 180,480,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,870,688.80 : 190,306,033.20 = 120,320,186.40 : x
  2. Step 2: Convert to fraction form
    126,870,688.80/190,306,033.20 = 120,320,186.40/x
  3. Step 3: Cross multiply
    126,870,688.80x = 190,306,033.20 × 120,320,186.40
  4. Step 4: Simplify right side
    126,870,688.80x = 22,897,657,387,668,588
  5. Step 5: Solve for x
    x = 22,897,657,387,668,588/126,870,688.80
  6. Step 6: Final answer
    x = 180,480,279.60

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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.