Home / 124,739,145.28-172,161,260.04-72,558,428.50

Finding the Fourth Proportional to 124,739,145.28, 172,161,260.04 and 72,558,428.50

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Solution

The fourth proportional to 124,739,145.28, 172,161,260.04 and 72,558,428.50 is: 100,142,985.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,739,145.28 : 172,161,260.04 = 72,558,428.50 : x
  2. Step 2: Convert to fraction form
    124,739,145.28/172,161,260.04 = 72,558,428.50/x
  3. Step 3: Cross multiply
    124,739,145.28x = 172,161,260.04 × 72,558,428.50
  4. Step 4: Simplify right side
    124,739,145.28x = 12,491,750,477,082,246
  5. Step 5: Solve for x
    x = 12,491,750,477,082,246/124,739,145.28
  6. Step 6: Final answer
    x = 100,142,985.98

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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.