Home / 156,461,055.30-215,905,454.78-86,840,955.70

Finding the Fourth Proportional to 156,461,055.30, 215,905,454.78 and 86,840,955.70

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Solution

The fourth proportional to 156,461,055.30, 215,905,454.78 and 86,840,955.70 is: 119,834,523.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,461,055.30 : 215,905,454.78 = 86,840,955.70 : x
  2. Step 2: Convert to fraction form
    156,461,055.30/215,905,454.78 = 86,840,955.70/x
  3. Step 3: Cross multiply
    156,461,055.30x = 215,905,454.78 × 86,840,955.70
  4. Step 4: Simplify right side
    156,461,055.30x = 18,749,436,032,964,368
  5. Step 5: Solve for x
    x = 18,749,436,032,964,368/156,461,055.30
  6. Step 6: Final answer
    x = 119,834,523.66

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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.