Home / 124,521.20-186,830.40-45,643.40

Finding the Fourth Proportional to 124,521.20, 186,830.40 and 45,643.40

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Solution

The fourth proportional to 124,521.20, 186,830.40 and 45,643.40 is: 68,482.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,521.20 : 186,830.40 = 45,643.40 : x
  2. Step 2: Convert to fraction form
    124,521.20/186,830.40 = 45,643.40/x
  3. Step 3: Cross multiply
    124,521.20x = 186,830.40 × 45,643.40
  4. Step 4: Simplify right side
    124,521.20x = 8,527,574,679.36
  5. Step 5: Solve for x
    x = 8,527,574,679.36/124,521.20
  6. Step 6: Final answer
    x = 68,482.91

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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.