Home / 155,445,612.80-233,317,718.40-78,855,123.20

Finding the Fourth Proportional to 155,445,612.80, 233,317,718.40 and 78,855,123.20

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Solution

The fourth proportional to 155,445,612.80, 233,317,718.40 and 78,855,123.20 is: 118,358,421.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,445,612.80 : 233,317,718.40 = 78,855,123.20 : x
  2. Step 2: Convert to fraction form
    155,445,612.80/233,317,718.40 = 78,855,123.20/x
  3. Step 3: Cross multiply
    155,445,612.80x = 233,317,718.40 × 78,855,123.20
  4. Step 4: Simplify right side
    155,445,612.80x = 18,398,297,429,174,908
  5. Step 5: Solve for x
    x = 18,398,297,429,174,908/155,445,612.80
  6. Step 6: Final answer
    x = 118,358,421.94

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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.