Home / 111,428,000.70-167,142,001.05-85,918,832.70

Finding the Fourth Proportional to 111,428,000.70, 167,142,001.05 and 85,918,832.70

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Solution

The fourth proportional to 111,428,000.70, 167,142,001.05 and 85,918,832.70 is: 128,878,249.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,428,000.70 : 167,142,001.05 = 85,918,832.70 : x
  2. Step 2: Convert to fraction form
    111,428,000.70/167,142,001.05 = 85,918,832.70/x
  3. Step 3: Cross multiply
    111,428,000.70x = 167,142,001.05 × 85,918,832.70
  4. Step 4: Simplify right side
    111,428,000.70x = 14,360,645,625,358,176
  5. Step 5: Solve for x
    x = 14,360,645,625,358,176/111,428,000.70
  6. Step 6: Final answer
    x = 128,878,249.05

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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.