Home / 163,838,273.40-245,592,072.90-81,831,022.20

Finding the Fourth Proportional to 163,838,273.40, 245,592,072.90 and 81,831,022.20

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Solution

The fourth proportional to 163,838,273.40, 245,592,072.90 and 81,831,022.20 is: 122,663,953.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,838,273.40 : 245,592,072.90 = 81,831,022.20 : x
  2. Step 2: Convert to fraction form
    163,838,273.40/245,592,072.90 = 81,831,022.20/x
  3. Step 3: Cross multiply
    163,838,273.40x = 245,592,072.90 × 81,831,022.20
  4. Step 4: Simplify right side
    163,838,273.40x = 20,097,050,369,623,920
  5. Step 5: Solve for x
    x = 20,097,050,369,623,920/163,838,273.40
  6. Step 6: Final answer
    x = 122,663,953.62

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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.