Home / 154,700.58-213,438.86-86,708.13

Finding the Fourth Proportional to 154,700.58, 213,438.86 and 86,708.13

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Solution

The fourth proportional to 154,700.58, 213,438.86 and 86,708.13 is: 119,630.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,700.58 : 213,438.86 = 86,708.13 : x
  2. Step 2: Convert to fraction form
    154,700.58/213,438.86 = 86,708.13/x
  3. Step 3: Cross multiply
    154,700.58x = 213,438.86 × 86,708.13
  4. Step 4: Simplify right side
    154,700.58x = 18,506,883,986.39
  5. Step 5: Solve for x
    x = 18,506,883,986.39/154,700.58
  6. Step 6: Final answer
    x = 119,630.35

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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.