Home / 145,883,521.65-201,318,657.95-78,902,554.57

Finding the Fourth Proportional to 145,883,521.65, 201,318,657.95 and 78,902,554.57

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Solution

The fourth proportional to 145,883,521.65, 201,318,657.95 and 78,902,554.57 is: 108,885,199.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,883,521.65 : 201,318,657.95 = 78,902,554.57 : x
  2. Step 2: Convert to fraction form
    145,883,521.65/201,318,657.95 = 78,902,554.57/x
  3. Step 3: Cross multiply
    145,883,521.65x = 201,318,657.95 × 78,902,554.57
  4. Step 4: Simplify right side
    145,883,521.65x = 15,884,556,394,464,524
  5. Step 5: Solve for x
    x = 15,884,556,394,464,524/145,883,521.65
  6. Step 6: Final answer
    x = 108,885,199.75

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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.