Home / 91,320.20-136,980.30-42,168.20

Finding the Fourth Proportional to 91,320.20, 136,980.30 and 42,168.20

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Solution

The fourth proportional to 91,320.20, 136,980.30 and 42,168.20 is: 63,252.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,320.20 : 136,980.30 = 42,168.20 : x
  2. Step 2: Convert to fraction form
    91,320.20/136,980.30 = 42,168.20/x
  3. Step 3: Cross multiply
    91,320.20x = 136,980.30 × 42,168.20
  4. Step 4: Simplify right side
    91,320.20x = 5,776,212,686.46
  5. Step 5: Solve for x
    x = 5,776,212,686.46/91,320.20
  6. Step 6: Final answer
    x = 63,252.30

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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.