Home / 105,409,155.16-145,443,962.28-66,228,230.74

Finding the Fourth Proportional to 105,409,155.16, 145,443,962.28 and 66,228,230.74

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Solution

The fourth proportional to 105,409,155.16, 145,443,962.28 and 66,228,230.74 is: 91,381,970.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,409,155.16 : 145,443,962.28 = 66,228,230.74 : x
  2. Step 2: Convert to fraction form
    105,409,155.16/145,443,962.28 = 66,228,230.74/x
  3. Step 3: Cross multiply
    105,409,155.16x = 145,443,962.28 × 66,228,230.74
  4. Step 4: Simplify right side
    105,409,155.16x = 9,632,496,293,619,696
  5. Step 5: Solve for x
    x = 9,632,496,293,619,696/105,409,155.16
  6. Step 6: Final answer
    x = 91,381,970.37

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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.