Home / 103,113.63-142,302.40-57,806.18

Finding the Fourth Proportional to 103,113.63, 142,302.40 and 57,806.18

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Solution

The fourth proportional to 103,113.63, 142,302.40 and 57,806.18 is: 79,775.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,113.63 : 142,302.40 = 57,806.18 : x
  2. Step 2: Convert to fraction form
    103,113.63/142,302.40 = 57,806.18/x
  3. Step 3: Cross multiply
    103,113.63x = 142,302.40 × 57,806.18
  4. Step 4: Simplify right side
    103,113.63x = 8,225,958,148.83
  5. Step 5: Solve for x
    x = 8,225,958,148.83/103,113.63
  6. Step 6: Final answer
    x = 79,775.66

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1.5x scale

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.