Home / 98,319.78-135,681.66-55,878.18

Finding the Fourth Proportional to 98,319.78, 135,681.66 and 55,878.18

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Solution

The fourth proportional to 98,319.78, 135,681.66 and 55,878.18 is: 77,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,319.78 : 135,681.66 = 55,878.18 : x
  2. Step 2: Convert to fraction form
    98,319.78/135,681.66 = 55,878.18/x
  3. Step 3: Cross multiply
    98,319.78x = 135,681.66 × 55,878.18
  4. Step 4: Simplify right side
    98,319.78x = 7,581,644,220.18
  5. Step 5: Solve for x
    x = 7,581,644,220.18/98,319.78
  6. Step 6: Final answer
    x = 77,112.10

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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.