Home / 105,211.95-145,193.27-57,465.30

Finding the Fourth Proportional to 105,211.95, 145,193.27 and 57,465.30

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Solution

The fourth proportional to 105,211.95, 145,193.27 and 57,465.30 is: 79,302.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,211.95 : 145,193.27 = 57,465.30 : x
  2. Step 2: Convert to fraction form
    105,211.95/145,193.27 = 57,465.30/x
  3. Step 3: Cross multiply
    105,211.95x = 145,193.27 × 57,465.30
  4. Step 4: Simplify right side
    105,211.95x = 8,343,574,531.20
  5. Step 5: Solve for x
    x = 8,343,574,531.20/105,211.95
  6. Step 6: Final answer
    x = 79,302.54

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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.