Home / 121,144,006.20-181,716,009.30-72,771,065.40

Finding the Fourth Proportional to 121,144,006.20, 181,716,009.30 and 72,771,065.40

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Solution

The fourth proportional to 121,144,006.20, 181,716,009.30 and 72,771,065.40 is: 109,156,598.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,144,006.20 : 181,716,009.30 = 72,771,065.40 : x
  2. Step 2: Convert to fraction form
    121,144,006.20/181,716,009.30 = 72,771,065.40/x
  3. Step 3: Cross multiply
    121,144,006.20x = 181,716,009.30 × 72,771,065.40
  4. Step 4: Simplify right side
    121,144,006.20x = 13,223,667,596,997,310
  5. Step 5: Solve for x
    x = 13,223,667,596,997,310/121,144,006.20
  6. Step 6: Final answer
    x = 109,156,598.10

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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.