Home / 102,120.23-140,923.45-56,798.08

Finding the Fourth Proportional to 102,120.23, 140,923.45 and 56,798.08

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Solution

The fourth proportional to 102,120.23, 140,923.45 and 56,798.08 is: 78,379.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,120.23 : 140,923.45 = 56,798.08 : x
  2. Step 2: Convert to fraction form
    102,120.23/140,923.45 = 56,798.08/x
  3. Step 3: Cross multiply
    102,120.23x = 140,923.45 × 56,798.08
  4. Step 4: Simplify right side
    102,120.23x = 8,004,181,386.98
  5. Step 5: Solve for x
    x = 8,004,181,386.98/102,120.23
  6. Step 6: Final answer
    x = 78,379.98

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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.