Home / 128,897,934.27-193,345,008.30-31,853,639.25

Finding the Fourth Proportional to 128,897,934.27, 193,345,008.30 and 31,853,639.25

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Solution

The fourth proportional to 128,897,934.27, 193,345,008.30 and 31,853,639.25 is: 47,779,991.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897,934.27 : 193,345,008.30 = 31,853,639.25 : x
  2. Step 2: Convert to fraction form
    128,897,934.27/193,345,008.30 = 31,853,639.25/x
  3. Step 3: Cross multiply
    128,897,934.27x = 193,345,008.30 × 31,853,639.25
  4. Step 4: Simplify right side
    128,897,934.27x = 6,158,742,145,176,456
  5. Step 5: Solve for x
    x = 6,158,742,145,176,456/128,897,934.27
  6. Step 6: Final answer
    x = 47,779,991.05

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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.