Home / 147,807.20-221,710.80-139,642.40

Finding the Fourth Proportional to 147,807.20, 221,710.80 and 139,642.40

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Solution

The fourth proportional to 147,807.20, 221,710.80 and 139,642.40 is: 209,463.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,807.20 : 221,710.80 = 139,642.40 : x
  2. Step 2: Convert to fraction form
    147,807.20/221,710.80 = 139,642.40/x
  3. Step 3: Cross multiply
    147,807.20x = 221,710.80 × 139,642.40
  4. Step 4: Simplify right side
    147,807.20x = 30,960,228,217.92
  5. Step 5: Solve for x
    x = 30,960,228,217.92/147,807.20
  6. Step 6: Final answer
    x = 209,463.60

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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.