Home / 78,918,254.98-117,545,211.61-75,377,364.08

Finding the Fourth Proportional to 78,918,254.98, 117,545,211.61 and 75,377,364.08

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Solution

The fourth proportional to 78,918,254.98, 117,545,211.61 and 75,377,364.08 is: 112,271,212.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,918,254.98 : 117,545,211.61 = 75,377,364.08 : x
  2. Step 2: Convert to fraction form
    78,918,254.98/117,545,211.61 = 75,377,364.08/x
  3. Step 3: Cross multiply
    78,918,254.98x = 117,545,211.61 × 75,377,364.08
  4. Step 4: Simplify right side
    78,918,254.98x = 8,860,248,210,611,444
  5. Step 5: Solve for x
    x = 8,860,248,210,611,444/78,918,254.98
  6. Step 6: Final answer
    x = 112,271,212.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.