Home / 121,681.51-182,543.29-54,237.53

Finding the Fourth Proportional to 121,681.51, 182,543.29 and 54,237.53

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Solution

The fourth proportional to 121,681.51, 182,543.29 and 54,237.53 is: 81,365.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,681.51 : 182,543.29 = 54,237.53 : x
  2. Step 2: Convert to fraction form
    121,681.51/182,543.29 = 54,237.53/x
  3. Step 3: Cross multiply
    121,681.51x = 182,543.29 × 54,237.53
  4. Step 4: Simplify right side
    121,681.51x = 9,900,697,488.44
  5. Step 5: Solve for x
    x = 9,900,697,488.44/121,681.51
  6. Step 6: Final answer
    x = 81,365.67

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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.