Home / 161,707,680.40-242,572,018.20-85,180,176.40

Finding the Fourth Proportional to 161,707,680.40, 242,572,018.20 and 85,180,176.40

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Solution

The fourth proportional to 161,707,680.40, 242,572,018.20 and 85,180,176.40 is: 127,775,794.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,707,680.40 : 242,572,018.20 = 85,180,176.40 : x
  2. Step 2: Convert to fraction form
    161,707,680.40/242,572,018.20 = 85,180,176.40/x
  3. Step 3: Cross multiply
    161,707,680.40x = 242,572,018.20 × 85,180,176.40
  4. Step 4: Simplify right side
    161,707,680.40x = 20,662,327,299,980,012
  5. Step 5: Solve for x
    x = 20,662,327,299,980,012/161,707,680.40
  6. Step 6: Final answer
    x = 127,775,794.25

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1.5x scale

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.