Home / 145,672,959.60-218,509,439.40-138,954,495.60

Finding the Fourth Proportional to 145,672,959.60, 218,509,439.40 and 138,954,495.60

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Solution

The fourth proportional to 145,672,959.60, 218,509,439.40 and 138,954,495.60 is: 208,431,743.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,672,959.60 : 218,509,439.40 = 138,954,495.60 : x
  2. Step 2: Convert to fraction form
    145,672,959.60/218,509,439.40 = 138,954,495.60/x
  3. Step 3: Cross multiply
    145,672,959.60x = 218,509,439.40 × 138,954,495.60
  4. Step 4: Simplify right side
    145,672,959.60x = 30,362,868,935,665,768
  5. Step 5: Solve for x
    x = 30,362,868,935,665,768/145,672,959.60
  6. Step 6: Final answer
    x = 208,431,743.40

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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.