Home / 103,428,646.80-155,142,970.20-45,859,808.40

Finding the Fourth Proportional to 103,428,646.80, 155,142,970.20 and 45,859,808.40

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Solution

The fourth proportional to 103,428,646.80, 155,142,970.20 and 45,859,808.40 is: 68,789,712.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,428,646.80 : 155,142,970.20 = 45,859,808.40 : x
  2. Step 2: Convert to fraction form
    103,428,646.80/155,142,970.20 = 45,859,808.40/x
  3. Step 3: Cross multiply
    103,428,646.80x = 155,142,970.20 × 45,859,808.40
  4. Step 4: Simplify right side
    103,428,646.80x = 7,114,826,887,978,909
  5. Step 5: Solve for x
    x = 7,114,826,887,978,909/103,428,646.80
  6. Step 6: Final answer
    x = 68,789,712.60

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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.