Home / 99,848,921.20-149,773,381.80-81,709,068.40

Finding the Fourth Proportional to 99,848,921.20, 149,773,381.80 and 81,709,068.40

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Solution

The fourth proportional to 99,848,921.20, 149,773,381.80 and 81,709,068.40 is: 122,563,602.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,848,921.20 : 149,773,381.80 = 81,709,068.40 : x
  2. Step 2: Convert to fraction form
    99,848,921.20/149,773,381.80 = 81,709,068.40/x
  3. Step 3: Cross multiply
    99,848,921.20x = 149,773,381.80 × 81,709,068.40
  4. Step 4: Simplify right side
    99,848,921.20x = 12,237,843,497,995,516
  5. Step 5: Solve for x
    x = 12,237,843,497,995,516/99,848,921.20
  6. Step 6: Final answer
    x = 122,563,602.60

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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.