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Finding the Fourth Proportional to 112,407.40, 168,611.10 and 56,420.20

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Solution

The fourth proportional to 112,407.40, 168,611.10 and 56,420.20 is: 84,630.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,407.40 : 168,611.10 = 56,420.20 : x
  2. Step 2: Convert to fraction form
    112,407.40/168,611.10 = 56,420.20/x
  3. Step 3: Cross multiply
    112,407.40x = 168,611.10 × 56,420.20
  4. Step 4: Simplify right side
    112,407.40x = 9,513,071,984.22
  5. Step 5: Solve for x
    x = 9,513,071,984.22/112,407.40
  6. Step 6: Final answer
    x = 84,630.30

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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.