Home / 145,514,985.80-218,272,478.70-72,742,998.20

Finding the Fourth Proportional to 145,514,985.80, 218,272,478.70 and 72,742,998.20

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Solution

The fourth proportional to 145,514,985.80, 218,272,478.70 and 72,742,998.20 is: 109,114,497.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,514,985.80 : 218,272,478.70 = 72,742,998.20 : x
  2. Step 2: Convert to fraction form
    145,514,985.80/218,272,478.70 = 72,742,998.20/x
  3. Step 3: Cross multiply
    145,514,985.80x = 218,272,478.70 × 72,742,998.20
  4. Step 4: Simplify right side
    145,514,985.80x = 15,877,794,525,183,638
  5. Step 5: Solve for x
    x = 15,877,794,525,183,638/145,514,985.80
  6. Step 6: Final answer
    x = 109,114,497.30

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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.