Home / 154,228.57-212,840.08-86,248.40

Finding the Fourth Proportional to 154,228.57, 212,840.08 and 86,248.40

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Solution

The fourth proportional to 154,228.57, 212,840.08 and 86,248.40 is: 119,025.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,228.57 : 212,840.08 = 86,248.40 : x
  2. Step 2: Convert to fraction form
    154,228.57/212,840.08 = 86,248.40/x
  3. Step 3: Cross multiply
    154,228.57x = 212,840.08 × 86,248.40
  4. Step 4: Simplify right side
    154,228.57x = 18,357,116,672.35
  5. Step 5: Solve for x
    x = 18,357,116,672.35/154,228.57
  6. Step 6: Final answer
    x = 119,025.40

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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.