Home / 161,707,721.40-242,572,079.70-85,180,217.40

Finding the Fourth Proportional to 161,707,721.40, 242,572,079.70 and 85,180,217.40

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Solution

The fourth proportional to 161,707,721.40, 242,572,079.70 and 85,180,217.40 is: 127,775,855.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,707,721.40 : 242,572,079.70 = 85,180,217.40 : x
  2. Step 2: Convert to fraction form
    161,707,721.40/242,572,079.70 = 85,180,217.40/x
  3. Step 3: Cross multiply
    161,707,721.40x = 242,572,079.70 × 85,180,217.40
  4. Step 4: Simplify right side
    161,707,721.40x = 20,662,342,484,016,128
  5. Step 5: Solve for x
    x = 20,662,342,484,016,128/161,707,721.40
  6. Step 6: Final answer
    x = 127,775,855.75

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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.