Home / 145,276.90-217,872.15-56,479.30

Finding the Fourth Proportional to 145,276.90, 217,872.15 and 56,479.30

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Solution

The fourth proportional to 145,276.90, 217,872.15 and 56,479.30 is: 84,702.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,276.90 : 217,872.15 = 56,479.30 : x
  2. Step 2: Convert to fraction form
    145,276.90/217,872.15 = 56,479.30/x
  3. Step 3: Cross multiply
    145,276.90x = 217,872.15 × 56,479.30
  4. Step 4: Simplify right side
    145,276.90x = 12,305,266,521.50
  5. Step 5: Solve for x
    x = 12,305,266,521.50/145,276.90
  6. Step 6: Final answer
    x = 84,702.16

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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.