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Finding the Fourth Proportional to 112,133.40, 168,264.90 and 42,019.80

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Solution

The fourth proportional to 112,133.40, 168,264.90 and 42,019.80 is: 63,053.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,133.40 : 168,264.90 = 42,019.80 : x
  2. Step 2: Convert to fraction form
    112,133.40/168,264.90 = 42,019.80/x
  3. Step 3: Cross multiply
    112,133.40x = 168,264.90 × 42,019.80
  4. Step 4: Simplify right side
    112,133.40x = 7,070,457,445.02
  5. Step 5: Solve for x
    x = 7,070,457,445.02/112,133.40
  6. Step 6: Final answer
    x = 63,053.98

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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.