Home / 91,221.51-136,823.91-64,681.35

Finding the Fourth Proportional to 91,221.51, 136,823.91 and 64,681.35

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Solution

The fourth proportional to 91,221.51, 136,823.91 and 64,681.35 is: 97,016.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,221.51 : 136,823.91 = 64,681.35 : x
  2. Step 2: Convert to fraction form
    91,221.51/136,823.91 = 64,681.35/x
  3. Step 3: Cross multiply
    91,221.51x = 136,823.91 × 64,681.35
  4. Step 4: Simplify right side
    91,221.51x = 8,849,955,481.61
  5. Step 5: Solve for x
    x = 8,849,955,481.61/91,221.51
  6. Step 6: Final answer
    x = 97,016.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.