Home / 91,140.22-125,492.79-77,681.26

Finding the Fourth Proportional to 91,140.22, 125,492.79 and 77,681.26

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Solution

The fourth proportional to 91,140.22, 125,492.79 and 77,681.26 is: 106,960.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,140.22 : 125,492.79 = 77,681.26 : x
  2. Step 2: Convert to fraction form
    91,140.22/125,492.79 = 77,681.26/x
  3. Step 3: Cross multiply
    91,140.22x = 125,492.79 × 77,681.26
  4. Step 4: Simplify right side
    91,140.22x = 9,748,438,048.12
  5. Step 5: Solve for x
    x = 9,748,438,048.12/91,140.22
  6. Step 6: Final answer
    x = 106,960.88

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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.