Home / 91,390.40-137,085.60-64,818.35

Finding the Fourth Proportional to 91,390.40, 137,085.60 and 64,818.35

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Solution

The fourth proportional to 91,390.40, 137,085.60 and 64,818.35 is: 97,227.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,390.40 : 137,085.60 = 64,818.35 : x
  2. Step 2: Convert to fraction form
    91,390.40/137,085.60 = 64,818.35/x
  3. Step 3: Cross multiply
    91,390.40x = 137,085.60 × 64,818.35
  4. Step 4: Simplify right side
    91,390.40x = 8,885,662,400.76
  5. Step 5: Solve for x
    x = 8,885,662,400.76/91,390.40
  6. Step 6: Final answer
    x = 97,227.53

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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.