Home / 112,243.40-168,429.90-42,129.80

Finding the Fourth Proportional to 112,243.40, 168,429.90 and 42,129.80

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Solution

The fourth proportional to 112,243.40, 168,429.90 and 42,129.80 is: 63,219.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,243.40 : 168,429.90 = 42,129.80 : x
  2. Step 2: Convert to fraction form
    112,243.40/168,429.90 = 42,129.80/x
  3. Step 3: Cross multiply
    112,243.40x = 168,429.90 × 42,129.80
  4. Step 4: Simplify right side
    112,243.40x = 7,095,918,001.02
  5. Step 5: Solve for x
    x = 7,095,918,001.02/112,243.40
  6. Step 6: Final answer
    x = 63,219.02

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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.