Home / 113,428.95-170,143.43-77,999.55

Finding the Fourth Proportional to 113,428.95, 170,143.43 and 77,999.55

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Solution

The fourth proportional to 113,428.95, 170,143.43 and 77,999.55 is: 116,999.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,428.95 : 170,143.43 = 77,999.55 : x
  2. Step 2: Convert to fraction form
    113,428.95/170,143.43 = 77,999.55/x
  3. Step 3: Cross multiply
    113,428.95x = 170,143.43 × 77,999.55
  4. Step 4: Simplify right side
    113,428.95x = 13,271,110,585.46
  5. Step 5: Solve for x
    x = 13,271,110,585.46/113,428.95
  6. Step 6: Final answer
    x = 116,999.33

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1.5x scale

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.