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Finding the Fourth Proportional to 104,656.40, 156,984.60 and 42,326.90

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Solution

The fourth proportional to 104,656.40, 156,984.60 and 42,326.90 is: 63,490.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,656.40 : 156,984.60 = 42,326.90 : x
  2. Step 2: Convert to fraction form
    104,656.40/156,984.60 = 42,326.90/x
  3. Step 3: Cross multiply
    104,656.40x = 156,984.60 × 42,326.90
  4. Step 4: Simplify right side
    104,656.40x = 6,644,671,465.74
  5. Step 5: Solve for x
    x = 6,644,671,465.74/104,656.40
  6. Step 6: Final answer
    x = 63,490.35

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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.