Home / 142,543,879.35-196,710,555.05-77,353,783.35

Finding the Fourth Proportional to 142,543,879.35, 196,710,555.05 and 77,353,783.35

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Solution

The fourth proportional to 142,543,879.35, 196,710,555.05 and 77,353,783.35 is: 106,748,221.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,543,879.35 : 196,710,555.05 = 77,353,783.35 : x
  2. Step 2: Convert to fraction form
    142,543,879.35/196,710,555.05 = 77,353,783.35/x
  3. Step 3: Cross multiply
    142,543,879.35x = 196,710,555.05 × 77,353,783.35
  4. Step 4: Simplify right side
    142,543,879.35x = 15,216,305,657,995,948
  5. Step 5: Solve for x
    x = 15,216,305,657,995,948/142,543,879.35
  6. Step 6: Final answer
    x = 106,748,221.86

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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.