Home / 128,688,176.64-193,030,580.16-31,644,721.92

Finding the Fourth Proportional to 128,688,176.64, 193,030,580.16 and 31,644,721.92

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Solution

The fourth proportional to 128,688,176.64, 193,030,580.16 and 31,644,721.92 is: 47,466,668.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,688,176.64 : 193,030,580.16 = 31,644,721.92 : x
  2. Step 2: Convert to fraction form
    128,688,176.64/193,030,580.16 = 31,644,721.92/x
  3. Step 3: Cross multiply
    128,688,176.64x = 193,030,580.16 × 31,644,721.92
  4. Step 4: Simplify right side
    128,688,176.64x = 6,108,399,031,219,469
  5. Step 5: Solve for x
    x = 6,108,399,031,219,469/128,688,176.64
  6. Step 6: Final answer
    x = 47,466,668.58

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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.