Home / 142,688,873.70-196,898,619.15-79,110,909.36

Finding the Fourth Proportional to 142,688,873.70, 196,898,619.15 and 79,110,909.36

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Solution

The fourth proportional to 142,688,873.70, 196,898,619.15 and 79,110,909.36 is: 109,166,387.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,688,873.70 : 196,898,619.15 = 79,110,909.36 : x
  2. Step 2: Convert to fraction form
    142,688,873.70/196,898,619.15 = 79,110,909.36/x
  3. Step 3: Cross multiply
    142,688,873.70x = 196,898,619.15 × 79,110,909.36
  4. Step 4: Simplify right side
    142,688,873.70x = 15,576,828,812,684,810
  5. Step 5: Solve for x
    x = 15,576,828,812,684,810/142,688,873.70
  6. Step 6: Final answer
    x = 109,166,387.04

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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.