Home / 142,437,657.60-196,561,612.80-80,555,673.60

Finding the Fourth Proportional to 142,437,657.60, 196,561,612.80 and 80,555,673.60

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Solution

The fourth proportional to 142,437,657.60, 196,561,612.80 and 80,555,673.60 is: 111,165,497.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,437,657.60 : 196,561,612.80 = 80,555,673.60 : x
  2. Step 2: Convert to fraction form
    142,437,657.60/196,561,612.80 = 80,555,673.60/x
  3. Step 3: Cross multiply
    142,437,657.60x = 196,561,612.80 × 80,555,673.60
  4. Step 4: Simplify right side
    142,437,657.60x = 15,834,153,123,006,382
  5. Step 5: Solve for x
    x = 15,834,153,123,006,382/142,437,657.60
  6. Step 6: Final answer
    x = 111,165,497.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.