Home / 103,615,840.20-142,987,013.46-57,205,250.76

Finding the Fourth Proportional to 103,615,840.20, 142,987,013.46 and 57,205,250.76

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Solution

The fourth proportional to 103,615,840.20, 142,987,013.46 and 57,205,250.76 is: 78,941,674.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,615,840.20 : 142,987,013.46 = 57,205,250.76 : x
  2. Step 2: Convert to fraction form
    103,615,840.20/142,987,013.46 = 57,205,250.76/x
  3. Step 3: Cross multiply
    103,615,840.20x = 142,987,013.46 × 57,205,250.76
  4. Step 4: Simplify right side
    103,615,840.20x = 8,179,607,960,402,795
  5. Step 5: Solve for x
    x = 8,179,607,960,402,795/103,615,840.20
  6. Step 6: Final answer
    x = 78,941,674.79

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1.5x scale

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.