Home / 145,541,709.80-218,312,564.70-72,769,722.20

Finding the Fourth Proportional to 145,541,709.80, 218,312,564.70 and 72,769,722.20

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Solution

The fourth proportional to 145,541,709.80, 218,312,564.70 and 72,769,722.20 is: 109,154,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,541,709.80 : 218,312,564.70 = 72,769,722.20 : x
  2. Step 2: Convert to fraction form
    145,541,709.80/218,312,564.70 = 72,769,722.20/x
  3. Step 3: Cross multiply
    145,541,709.80x = 218,312,564.70 × 72,769,722.20
  4. Step 4: Simplify right side
    145,541,709.80x = 15,886,544,685,988,526
  5. Step 5: Solve for x
    x = 15,886,544,685,988,526/145,541,709.80
  6. Step 6: Final answer
    x = 109,154,583.30

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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.