Home / 107,979.67-148,810.16-77,712.45

Finding the Fourth Proportional to 107,979.67, 148,810.16 and 77,712.45

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Solution

The fourth proportional to 107,979.67, 148,810.16 and 77,712.45 is: 107,097.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,979.67 : 148,810.16 = 77,712.45 : x
  2. Step 2: Convert to fraction form
    107,979.67/148,810.16 = 77,712.45/x
  3. Step 3: Cross multiply
    107,979.67x = 148,810.16 × 77,712.45
  4. Step 4: Simplify right side
    107,979.67x = 11,564,402,118.49
  5. Step 5: Solve for x
    x = 11,564,402,118.49/107,979.67
  6. Step 6: Final answer
    x = 107,097.96

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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.