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Finding the Fourth Proportional to 159,891,848.04, 239,926,455 and 78,011,399.28

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Solution

The fourth proportional to 159,891,848.04, 239,926,455 and 78,011,399.28 is: 117,060,367.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,891,848.04 : 239,926,455 = 78,011,399.28 : x
  2. Step 2: Convert to fraction form
    159,891,848.04/239,926,455 = 78,011,399.28/x
  3. Step 3: Cross multiply
    159,891,848.04x = 239,926,455 × 78,011,399.28
  4. Step 4: Simplify right side
    159,891,848.04x = 18,716,998,478,839,952
  5. Step 5: Solve for x
    x = 18,716,998,478,839,952/159,891,848.04
  6. Step 6: Final answer
    x = 117,060,367.42

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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.