Home / 123,637,181.76-170,627,256-71,428,417.92

Finding the Fourth Proportional to 123,637,181.76, 170,627,256 and 71,428,417.92

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Solution

The fourth proportional to 123,637,181.76, 170,627,256 and 71,428,417.92 is: 98,575,806.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,637,181.76 : 170,627,256 = 71,428,417.92 : x
  2. Step 2: Convert to fraction form
    123,637,181.76/170,627,256 = 71,428,417.92/x
  3. Step 3: Cross multiply
    123,637,181.76x = 170,627,256 × 71,428,417.92
  4. Step 4: Simplify right side
    123,637,181.76x = 12,187,634,950,110,828
  5. Step 5: Solve for x
    x = 12,187,634,950,110,828/123,637,181.76
  6. Step 6: Final answer
    x = 98,575,806.86

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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.