Home / 212,868,015.40-319,302,023.10-91,935,663.40

Finding the Fourth Proportional to 212,868,015.40, 319,302,023.10 and 91,935,663.40

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Solution

The fourth proportional to 212,868,015.40, 319,302,023.10 and 91,935,663.40 is: 137,903,495.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,868,015.40 : 319,302,023.10 = 91,935,663.40 : x
  2. Step 2: Convert to fraction form
    212,868,015.40/319,302,023.10 = 91,935,663.40/x
  3. Step 3: Cross multiply
    212,868,015.40x = 319,302,023.10 × 91,935,663.40
  4. Step 4: Simplify right side
    212,868,015.40x = 29,355,243,318,660,628
  5. Step 5: Solve for x
    x = 29,355,243,318,660,628/212,868,015.40
  6. Step 6: Final answer
    x = 137,903,495.10

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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.