Home / 158,478.04-218,689.78-86,852.98

Finding the Fourth Proportional to 158,478.04, 218,689.78 and 86,852.98

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Solution

The fourth proportional to 158,478.04, 218,689.78 and 86,852.98 is: 119,851.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,478.04 : 218,689.78 = 86,852.98 : x
  2. Step 2: Convert to fraction form
    158,478.04/218,689.78 = 86,852.98/x
  3. Step 3: Cross multiply
    158,478.04x = 218,689.78 × 86,852.98
  4. Step 4: Simplify right side
    158,478.04x = 18,993,857,777.96
  5. Step 5: Solve for x
    x = 18,993,857,777.96/158,478.04
  6. Step 6: Final answer
    x = 119,851.67

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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.