Home / 116,000,128.51-160,041,001.97-65,758,960.78

Finding the Fourth Proportional to 116,000,128.51, 160,041,001.97 and 65,758,960.78

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Solution

The fourth proportional to 116,000,128.51, 160,041,001.97 and 65,758,960.78 is: 90,725,157.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,000,128.51 : 160,041,001.97 = 65,758,960.78 : x
  2. Step 2: Convert to fraction form
    116,000,128.51/160,041,001.97 = 65,758,960.78/x
  3. Step 3: Cross multiply
    116,000,128.51x = 160,041,001.97 × 65,758,960.78
  4. Step 4: Simplify right side
    116,000,128.51x = 10,524,129,971,501,428
  5. Step 5: Solve for x
    x = 10,524,129,971,501,428/116,000,128.51
  6. Step 6: Final answer
    x = 90,725,157.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.