Home / 78,801,785.70-118,202,678.55-74,337,681.30

Finding the Fourth Proportional to 78,801,785.70, 118,202,678.55 and 74,337,681.30

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Solution

The fourth proportional to 78,801,785.70, 118,202,678.55 and 74,337,681.30 is: 111,506,521.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,801,785.70 : 118,202,678.55 = 74,337,681.30 : x
  2. Step 2: Convert to fraction form
    78,801,785.70/118,202,678.55 = 74,337,681.30/x
  3. Step 3: Cross multiply
    78,801,785.70x = 118,202,678.55 × 74,337,681.30
  4. Step 4: Simplify right side
    78,801,785.70x = 8,786,913,046,856,246
  5. Step 5: Solve for x
    x = 8,786,913,046,856,246/78,801,785.70
  6. Step 6: Final answer
    x = 111,506,521.95

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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.