Home / 105,772,643.40-158,658,965.10-69,492,937.80

Finding the Fourth Proportional to 105,772,643.40, 158,658,965.10 and 69,492,937.80

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Solution

The fourth proportional to 105,772,643.40, 158,658,965.10 and 69,492,937.80 is: 104,239,406.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,772,643.40 : 158,658,965.10 = 69,492,937.80 : x
  2. Step 2: Convert to fraction form
    105,772,643.40/158,658,965.10 = 69,492,937.80/x
  3. Step 3: Cross multiply
    105,772,643.40x = 158,658,965.10 × 69,492,937.80
  4. Step 4: Simplify right side
    105,772,643.40x = 11,025,677,593,106,670
  5. Step 5: Solve for x
    x = 11,025,677,593,106,670/105,772,643.40
  6. Step 6: Final answer
    x = 104,239,406.70

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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.