Home / 128,736,030.30-193,104,045.45-31,690,967.10

Finding the Fourth Proportional to 128,736,030.30, 193,104,045.45 and 31,690,967.10

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Solution

The fourth proportional to 128,736,030.30, 193,104,045.45 and 31,690,967.10 is: 47,536,450.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,736,030.30 : 193,104,045.45 = 31,690,967.10 : x
  2. Step 2: Convert to fraction form
    128,736,030.30/193,104,045.45 = 31,690,967.10/x
  3. Step 3: Cross multiply
    128,736,030.30x = 193,104,045.45 × 31,690,967.10
  4. Step 4: Simplify right side
    128,736,030.30x = 6,119,653,951,232,855
  5. Step 5: Solve for x
    x = 6,119,653,951,232,855/128,736,030.30
  6. Step 6: Final answer
    x = 47,536,450.65

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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.