Home / 128,462,031.72-177,277,154.76-69,724,693.62

Finding the Fourth Proportional to 128,462,031.72, 177,277,154.76 and 69,724,693.62

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Solution

The fourth proportional to 128,462,031.72, 177,277,154.76 and 69,724,693.62 is: 96,219,833.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,462,031.72 : 177,277,154.76 = 69,724,693.62 : x
  2. Step 2: Convert to fraction form
    128,462,031.72/177,277,154.76 = 69,724,693.62/x
  3. Step 3: Cross multiply
    128,462,031.72x = 177,277,154.76 × 69,724,693.62
  4. Step 4: Simplify right side
    128,462,031.72x = 12,360,595,301,466,324
  5. Step 5: Solve for x
    x = 12,360,595,301,466,324/128,462,031.72
  6. Step 6: Final answer
    x = 96,219,833.49

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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.