Home / 155,830,953.44-215,053,045.80-86,215,200.50

Finding the Fourth Proportional to 155,830,953.44, 215,053,045.80 and 86,215,200.50

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Solution

The fourth proportional to 155,830,953.44, 215,053,045.80 and 86,215,200.50 is: 118,980,478.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,830,953.44 : 215,053,045.80 = 86,215,200.50 : x
  2. Step 2: Convert to fraction form
    155,830,953.44/215,053,045.80 = 86,215,200.50/x
  3. Step 3: Cross multiply
    155,830,953.44x = 215,053,045.80 × 86,215,200.50
  4. Step 4: Simplify right side
    155,830,953.44x = 18,540,841,461,782,684
  5. Step 5: Solve for x
    x = 18,540,841,461,782,684/155,830,953.44
  6. Step 6: Final answer
    x = 118,980,478.86

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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.