Home / 128,547,373.14-177,449,663.12-86,788,010.25

Finding the Fourth Proportional to 128,547,373.14, 177,449,663.12 and 86,788,010.25

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Solution

The fourth proportional to 128,547,373.14, 177,449,663.12 and 86,788,010.25 is: 119,804,106.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,547,373.14 : 177,449,663.12 = 86,788,010.25 : x
  2. Step 2: Convert to fraction form
    128,547,373.14/177,449,663.12 = 86,788,010.25/x
  3. Step 3: Cross multiply
    128,547,373.14x = 177,449,663.12 × 86,788,010.25
  4. Step 4: Simplify right side
    128,547,373.14x = 15,400,503,181,283,668
  5. Step 5: Solve for x
    x = 15,400,503,181,283,668/128,547,373.14
  6. Step 6: Final answer
    x = 119,804,106.49

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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.