Home / 128,700,325.80-193,428,402.30-112,072,127.40

Finding the Fourth Proportional to 128,700,325.80, 193,428,402.30 and 112,072,127.40

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Solution

The fourth proportional to 128,700,325.80, 193,428,402.30 and 112,072,127.40 is: 168,437,277.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,700,325.80 : 193,428,402.30 = 112,072,127.40 : x
  2. Step 2: Convert to fraction form
    128,700,325.80/193,428,402.30 = 112,072,127.40/x
  3. Step 3: Cross multiply
    128,700,325.80x = 193,428,402.30 × 112,072,127.40
  4. Step 4: Simplify right side
    128,700,325.80x = 21,677,932,545,344,056
  5. Step 5: Solve for x
    x = 21,677,932,545,344,056/128,700,325.80
  6. Step 6: Final answer
    x = 168,437,277.92

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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.