Home / 159,746,681.60-239,620,022.40-78,950,931.20

Finding the Fourth Proportional to 159,746,681.60, 239,620,022.40 and 78,950,931.20

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Solution

The fourth proportional to 159,746,681.60, 239,620,022.40 and 78,950,931.20 is: 118,426,396.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,746,681.60 : 239,620,022.40 = 78,950,931.20 : x
  2. Step 2: Convert to fraction form
    159,746,681.60/239,620,022.40 = 78,950,931.20/x
  3. Step 3: Cross multiply
    159,746,681.60x = 239,620,022.40 × 78,950,931.20
  4. Step 4: Simplify right side
    159,746,681.60x = 18,918,223,902,644,860
  5. Step 5: Solve for x
    x = 18,918,223,902,644,860/159,746,681.60
  6. Step 6: Final answer
    x = 118,426,396.80

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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.