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Finding the Fourth Proportional to 134,730,113.68, 185,929,978.80 and 79,015,717.90

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Solution

The fourth proportional to 134,730,113.68, 185,929,978.80 and 79,015,717.90 is: 109,043,111.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,730,113.68 : 185,929,978.80 = 79,015,717.90 : x
  2. Step 2: Convert to fraction form
    134,730,113.68/185,929,978.80 = 79,015,717.90/x
  3. Step 3: Cross multiply
    134,730,113.68x = 185,929,978.80 × 79,015,717.90
  4. Step 4: Simplify right side
    134,730,113.68x = 14,691,390,754,013,782
  5. Step 5: Solve for x
    x = 14,691,390,754,013,782/134,730,113.68
  6. Step 6: Final answer
    x = 109,043,111.10

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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.