Home / 142,018,427.20-213,027,640.80-73,143,673.60

Finding the Fourth Proportional to 142,018,427.20, 213,027,640.80 and 73,143,673.60

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Solution

The fourth proportional to 142,018,427.20, 213,027,640.80 and 73,143,673.60 is: 109,715,510.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,018,427.20 : 213,027,640.80 = 73,143,673.60 : x
  2. Step 2: Convert to fraction form
    142,018,427.20/213,027,640.80 = 73,143,673.60/x
  3. Step 3: Cross multiply
    142,018,427.20x = 213,027,640.80 × 73,143,673.60
  4. Step 4: Simplify right side
    142,018,427.20x = 15,581,624,226,453,242
  5. Step 5: Solve for x
    x = 15,581,624,226,453,242/142,018,427.20
  6. Step 6: Final answer
    x = 109,715,510.40

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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.