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Finding the Fourth Proportional to 112,574.50, 168,861.70 and 42,437.40

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Solution

The fourth proportional to 112,574.50, 168,861.70 and 42,437.40 is: 63,656.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,574.50 : 168,861.70 = 42,437.40 : x
  2. Step 2: Convert to fraction form
    112,574.50/168,861.70 = 42,437.40/x
  3. Step 3: Cross multiply
    112,574.50x = 168,861.70 × 42,437.40
  4. Step 4: Simplify right side
    112,574.50x = 7,166,051,507.58
  5. Step 5: Solve for x
    x = 7,166,051,507.58/112,574.50
  6. Step 6: Final answer
    x = 63,656.08

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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.