Home / 154,570.64-213,338.57-105,642.90

Finding the Fourth Proportional to 154,570.64, 213,338.57 and 105,642.90

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Solution

The fourth proportional to 154,570.64, 213,338.57 and 105,642.90 is: 145,808.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,570.64 : 213,338.57 = 105,642.90 : x
  2. Step 2: Convert to fraction form
    154,570.64/213,338.57 = 105,642.90/x
  3. Step 3: Cross multiply
    154,570.64x = 213,338.57 × 105,642.90
  4. Step 4: Simplify right side
    154,570.64x = 22,537,704,688.44
  5. Step 5: Solve for x
    x = 22,537,704,688.44/154,570.64
  6. Step 6: Final answer
    x = 145,808.45

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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.