Home / 125,790.50-188,630.40-66,612.36

Finding the Fourth Proportional to 125,790.50, 188,630.40 and 66,612.36

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Solution

The fourth proportional to 125,790.50, 188,630.40 and 66,612.36 is: 99,889.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,790.50 : 188,630.40 = 66,612.36 : x
  2. Step 2: Convert to fraction form
    125,790.50/188,630.40 = 66,612.36/x
  3. Step 3: Cross multiply
    125,790.50x = 188,630.40 × 66,612.36
  4. Step 4: Simplify right side
    125,790.50x = 12,565,116,111.74
  5. Step 5: Solve for x
    x = 12,565,116,111.74/125,790.50
  6. Step 6: Final answer
    x = 99,889.23

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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.