Home / 142,018,411.20-213,027,616.80-73,143,657.60

Finding the Fourth Proportional to 142,018,411.20, 213,027,616.80 and 73,143,657.60

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Solution

The fourth proportional to 142,018,411.20, 213,027,616.80 and 73,143,657.60 is: 109,715,486.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,018,411.20 : 213,027,616.80 = 73,143,657.60 : x
  2. Step 2: Convert to fraction form
    142,018,411.20/213,027,616.80 = 73,143,657.60/x
  3. Step 3: Cross multiply
    142,018,411.20x = 213,027,616.80 × 73,143,657.60
  4. Step 4: Simplify right side
    142,018,411.20x = 15,581,619,062,563,208
  5. Step 5: Solve for x
    x = 15,581,619,062,563,208/142,018,411.20
  6. Step 6: Final answer
    x = 109,715,486.40

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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.